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Sweet & delicious Jammie Dodger blondies! With a delicious blondie batter, white chocolate chips, raspberry jam and Jammie Dodgers! 

Jammie Dodger blondies

Oh hey there! This is probably one of the most requested recipes I will have ever posted. I realise I say this a lot, but honestly… the other day I did a recipe request post on Instagram, and genuinely over 200 people said Jammie Dodger blondies… the good thing is, they were already baked and ready to post on here! 

Because Jammie Dodger blondies are something that is so highly requested, I wanted to get the recipe right! This beauty is a marriage between my bakewell blondies that are so highly adored already and my other blondies such as my Easter blondies!

Blondies are similar to brownies in the fact that they can sometimes be a little tricky to bake – but honestly, once you crack it they are 100% worth the effort! Blondies are the dreamiest of dreamy when it comes to traybakes. 

What are blondies?

I often get a lot of “What’s the difference between blondies and cookie bars” questions – and trust me they are different. A cookie bar is literally just a cookie that has been baked into traybake form! You just don’t scoop them into individual cookies! Blondies, however, are a non-chocolatey or ‘white’ version of a brownie! Very similar ingredients to a brownie, but no chocolate base!

Some blondies use a white chocolate base for the recipe – and I do love that, but generally, I prefer to leave that out. You can add it in, but I find it more successful without it! I use white chocolate chips instead! If you can’t find white chocolate chips, you can just cut up the white chocolate into chip size!

The mixture 

When it comes to getting the batter right – it’s a fine line between mixing the mixture enough, but not overdoing it! I tend to melt my butter until it’s liquid (but not split) – and then mixing my sugar’s into the butter for about 2 minutes. I use a 50/50 mix of white granulated sugar, and light brown sugar, but if you want the lighter more classic blondie colour just use all white granulated! 

Then, I add in my eggs and beat again till smooth. The eggs will loosen the mixture slightly, but don’t worry. If you want to add in a flavouring such as vanilla, this is the point to do it. It’s optional because sweetness comes from the white chocolate chips and the jam, but it’s also delicious if you do include it and have a sweet tooth like me.

Then, I add in the flour and the cornflour. You may ask why do you add cornflour? And that’s because it creates an epic texture. However, if you don’t have access to cornflour (or cornstarch as it’s known in other countries) then you can leave it out. I just adore it and use cornflour often in my bakes. 

The flavours

I use raspberry jam in these blondies because the jammie dodgers I use are raspberry flavoured. You can use any type of jam you fancy whether it’s strawberry, seedless, blackberry conserves, lemon curd or so on! Anything you really want will work – it’s just best to stick to the same quantities so you don’t overdo it and make the mixture not bake!

You can make your own homemade jammie dodgers – but I find the shopbought regular size ones PERFECTLY fit the 9×9″ square tin, and make it one jammie dodger per slice! You can use mini ones, or a mixture, or less! It would be hard to use more though… but you get me!


By the time you have mixture your batter, it shouldn’t be incredibly thick like a cake mix, but also shouldn’t be easy to pour. I usually need to spread the mixture a bit into the tin, but it’s not a hard task. I use a 9×9″ tin – and it creates the perfect size blondie! If you use a smaller tin it WILL need longer to bake, because the volume will be too much!

When it comes to the actual baking, you’ve got to find that perfect balance. When I take the blondies out of the oven, the middle wobbles slightly. The whole tray shouldn’t wobble – but there should still be a bit in the middle as the blondies will continue to bake somewhat in the tin. A skewer test is hard, as jam or melted chocolate may come out on it – but there shouldn’t be any raw batter!

If your blondies still seem raw, you may have over mixed the mixture (just like brownies taking longer in some ovens!) – cover in foil, and bake in 5-minute increments. If you are unsure, once the jammie dodger blondies have cooled fully – you can ‘set’ them in the fridge for a few hours which will firm them up nicely, give the best texture, and make them easier to cut! 

Tips & Tricks

  • I use this cake tin for my blondies
  • If you struggle with bakes, use an oven thermometer to check your oven is correct 
  • These will last 3-4+ days at room temperature or in the fridge
  • These can freeze for 3+ months 
  • Bake until you have a slight wobble in the middle, leave to cool fully in the tin, and then ‘set’ the blondies in the fridge for a firmer set. 

Jammie Dodger Blondies!

Sweet & delicious Jammie Dodger blondies! With a delicious blondie batter, white chocolate chips, raspberry jam and Jammie Dodgers! 
Print Pin Rate
Category: Traybakes
Type: Blondies
Keyword: Jam, Jammie Dodger
Prep Time: 30 minutes
Cook Time: 30 minutes
Cooling Time: 2 hours
Total Time: 3 hours
Servings: 16 Pieces
Author: Jane's Patisserie


  • 200 g unsalted butter (melted)
  • 125 g white granulated sugar
  • 125 g light brown sugar (see notes!)
  • 3 medium eggs
  • 1 tsp vanilla extract (optional)
  • 275 g plain flour
  • 1 tbsp cornflour (optional - see notes)
  • 150 g white chocolate chips
  • 200 g jam (I used raspberry!)
  • 16 Jammie Dodgers


  • Preheat your oven to 180ºc/160ºc fan and line a 9x9" square tin with parchment paper.
  • In a large bowl, add the melted butter and sugars and whisk until smooth. I beat mine for several minutes, and it starts to lighten the mixture.
  • Add in the eggs and beat again until smooth. If you are using vanilla, add it in now.
  • Add in the flour and cornflour and beat until a thick blondie mixture is made - it really doesn't take long to create this mixture.
  • Add in the white chocolate and fold through,
  • Pour the mixture into the tin, and spread.
  • Spoon on the jam in blobs, and then lightly swirl through
  • Add the Jammie Dodgers on, I line them all up next to each other
  • Bake the Blondies in the oven for 25-30+ minutes, or until there is an ever so slight wobble in the middle.
  • Leave to cool in the tin.
  • Set them in the fridge for a minimum for 3 hours to help set the blondies for the best fudge texture


  • I use this cake tin for my blondies
  • If you struggle with bakes, use an oven thermometer to check your oven is correct 
  • These will last 3-4+ days at room temperature or in the fridge
  • These can freeze for 3+ months 
  • Bake until you have a slight wobble in the middle, leave to cool fully in the tin, and then 'set' the blondies in the fridge for a firmer set. 


Find my other Recipes on my Recipes Page!


J x

© Jane’s Patisserie. All images & content are copyright protected. Do not use my images without prior permission. If you want to republish this recipe, please re-write the recipe in your own words and credit me, or link back to this post for the recipe.


  1. Gem on April 18, 2024 at 11:21 pm

    Is it better for me to use unsalted butter or baking spread?… Also how long do I need to cool the butter for before I mix it with the sugars?

    • Jane's Patisserie on May 10, 2024 at 11:23 am

      Both work well, it’s down to personal preference. And I just go ahead and mix straight away!

  2. Ellie on April 3, 2024 at 3:03 pm

    i tried the recipe twice and both times i have had to keep the blondies in for longer as the middle will be raw while the outside cakey and the jammy dodgers got burnt so i had to replace them. I did put them in for 25 minutes but were still not cooking so i was just wondering how i can stop this from happening.

    • Jane's Patisserie on May 8, 2024 at 11:50 am

      Hey! Id recommend getting an oven thermometer to check your oven temp internally, and then lower the temp by 20º and bake for longer for a more even bake x

  3. James CC on June 8, 2023 at 5:03 pm

    4 stars
    Mine took over an hour and needed foil to stop the tops burning in the end. However they taste amazing!

    • Jane's Patisserie on June 12, 2023 at 4:50 pm

      Hiya, it’s worth getting an oven thermometer to check the temperature correct as it sounds very off, but I’m so glad you enjoyed them! x

  4. Jordan on February 13, 2023 at 5:24 pm

    With Blondies I always over bake I bake them for 30 mins plus but they always come out over baked even though I put them in the fridge after they had cooled down in the tray. Could I have some help please?

    • Jane's Patisserie on February 14, 2023 at 12:04 pm

      Hiya! Try baking them for 25 mins, or until there is a small wobble in the middle, then leave them in the fridge to ‘set’ overnight. Hope this helps! x

  5. Kelly dervish on June 1, 2022 at 4:10 pm

    Hi Jane thank you for this recipe!
    I’m planning on making it for Father’s Day- but the person I’m making it for doesn’t like white chocolate- could I possibly sub it for a different type?

    • Jane's Patisserie on June 10, 2022 at 11:48 am

      Yes absolutely you can! Enjoy! x

  6. Mrs M on April 21, 2022 at 2:36 pm

    5 stars
    Made these so many times now ! An absolutely favourite in my family & extremely easy recipe to follow , having a go at the slutty brownies next 😍

  7. cc on March 27, 2022 at 7:46 pm

    hello! how do i keep the sides crispy? mine often soften after some time out of the oven..

    • Jane's Patisserie on March 30, 2022 at 3:12 pm

      Hiya! Often, some bakes will soften some time after baking. Hope this helps! x

  8. cc on March 23, 2022 at 4:24 pm

    hello there! im not sure why my batter looked a little greasy after mixing everything? unlike a cookie dough kind of batter? i have made this several times and each time the batter looks different.. the butter was definitely cooled before mixing with the rest of the ingredients..

    • Jane's Patisserie on March 30, 2022 at 3:13 pm

      Hiya! Are you ever changing brands of ingredients, or changing how you melt/mix it? This can definitely contribute to the differences – but if it bakes okay then it won’t matter! Hope this helps! x

    • Grace on July 27, 2022 at 6:00 pm

      Hello there, I absolutely love this recipe, all of yours to be honest. One of my friends is vegan and I’m struggling to find a good vegan recipe for these. If I swap the butter for vegan butter and use the vegan alternative for egg (flaxseed) would you imagine this recipe would still work. I know it’s a stab in the dark but I just love this recipe. Thanks in advance x x

    • Jane's Patisserie on July 28, 2022 at 3:28 pm

      Hiya! I personally have not tested a recipe like this as vegan – so I am unable to say sorry! Please let me know the outcome if you do though, have fun! x

  9. Michelle on March 22, 2022 at 5:03 pm

    5 stars
    Made these but used blackcurrant curd intsead. They tasted lovely but wondering if I’d be able to leave out the white chocolate? They were just a little too sweet for us. Would it be ok to leave the chocolate out?

    • Jane's Patisserie on March 23, 2022 at 2:07 pm

      Yes absolutely this will be fine! Enjoy! x

  10. Sami on October 10, 2021 at 9:49 am

    Hey Jane! I’m going to bake these but realised I only have two medium eggs and could only find a large box when I went out to get some more! Would this still work with all large eggs or would you recommend I change the weights of some of the ingredients? I’m thinking that it’s probably a better idea to use all the same size rather than two medium and one large egg 🙈

  11. Gemma on October 1, 2021 at 2:55 pm

    Hello I want to make threes but with milk chocolate and not white can it be done?

  12. Emily on September 9, 2021 at 9:33 pm

    5 stars
    Can these be frozen after being cooked?

    • Rose on August 10, 2023 at 11:48 am

      Would love to know this also

  13. Lisa on August 21, 2021 at 5:09 pm

    5 stars
    Easy to follow recipe. A hit with the family & my entry for a works bake off this week. The only issue I’m having is the r Jamie dodgers are burnt but the blondie is perfect. Is there any way to fix this?

  14. Gwen on August 8, 2021 at 1:02 pm

    I’ve nailed the recipe on my second attempt. On my first attempt they were not set and the inside was like custard! On my second attempt I cooked them for an extra 15 minutes and then let them cool completely in the tin and then transfer them to the fridge and let them set there overnight. The next day they were perfect. Not cakey and not too sludgy! Thanks Jane! These won’t last long🤤

    • Maggie Heath on September 27, 2021 at 8:56 am

      Hi Jane, I’ve got a big birthday & a family do so am trying your gorgeous receips. I’ll need to freeze most of them. Can the jammie dodgers blondes be frozen & the rolo brownies? By the made the blondes last night, absolutely fab. Thank you

    • Jane's Patisserie on September 28, 2021 at 1:40 pm

      Hiya! Yes absolutely they can! Hope this helps. Enjoy! Team Jane x

  15. Wendy Shaw on June 30, 2021 at 4:52 pm

    3 stars
    Hi Jane, tried these a couple of times but never seem to come out correctly, always a little cakey, I bake for 25 mins the same as your brownies which are 100% perfect and a favourite wuth all my testers so no sure why these seem to fail, your recipes are fab so it must be something I am doing wrong .
    Wanted to attatch a picture but there doesn’t seem anything to be able to do this

  16. Caroline on June 25, 2021 at 10:05 am

    Hi Jane,

    LOVE your recipes and i’m excited to try this recipe!

    I just want to ask about the amount of flour, this recipe asks for 275g of plain flour, whereas say the raspberry and white chocolate blondies asks for a lot less, what in these blondies means more flour is needed?

    Thank you.

    • Jane's Patisserie on June 28, 2021 at 7:48 pm

      The two methods for the blondies are completely different x

  17. Charlotte on June 22, 2021 at 3:39 pm

    5 stars
    These were a massive hit in the office, so much so one of the ladies is making them herself tonight. Usually i bake mine for exactly the same time as the recipes on this website but had to stick these in for an extra 10 minutes, I’ve seen a lot of people say there’s looked raw so they cooked them more and more and then they were cakey. Mine were very wobbly when i took them out but I have learnt i just need to trust Jane with blondies and brownies and take them out when she says lol. I baked them in the evening and left them over night, In the morning they were perfect despite my initial reservations. My only issue was that i couldn’t fit all 16 jammy dodgers on despite having the tin Jane recommends lol

    • Kerry on November 15, 2023 at 7:29 pm

      I’ve also used the recommended tin and my biscuits are not sitting nice either I felt I had to squash them in.

  18. Tamara on June 11, 2021 at 1:35 pm

    5 stars
    Hi Jane!
    Thank you so much for this stunning, simple recipe! I’m currently recovering from an eating disorder in hospital, and chose your recipe as my baking challenge this week, supported by our Occupational Therapists. Despite finding baking difficult due to my condition, your recipe and notes guided me through it and the outcome was utterly delicious, enjoyed by all the patients on the ward.
    Only feedback I’d give is… more white chocolate! Might opt for bigger choc-chips next time (there will definitely be a next time!)
    Thank you for being part of my recovery – I can’t wait to challenge myself to more of your recipes soon!
    Tamara ❤️

    • Jane's Patisserie on June 14, 2021 at 11:12 am

      Hey! Thank you for being honest, I am so glad you are getting better – I definitely agree, the more chocolate the better in my eyes haha!xx

    • Claire on July 29, 2021 at 8:27 am

      Just wanted to say well done you. What a great step forward in your recovery and long may it continue. Wishing you all the best x

  19. Claudia on May 21, 2021 at 11:09 am

    Hey Jane!
    If I added more cornstartch would it make the blondies less cakey ?
    Thank you! 🙂

    • Jane's Patisserie on May 22, 2021 at 3:24 pm

      Cakey blondies just mean they are over baked, the cornflour won’t be prevent that x

  20. Sam on April 6, 2021 at 3:26 pm

    Hi is there a way that I can add in white chocolate with the melted butter for a chocolate base .

  21. Lisa on March 28, 2021 at 8:41 am

    5 stars
    Hi when i make them the mixture seems very muxh like liquid than a thick mixture do you think i could try with 2 eggs instead? Thanks

    • Jane's Patisserie on March 29, 2021 at 3:07 pm

      Hello! Yes its worth a shot x

  22. Lucy on March 27, 2021 at 11:01 am

    5 stars
    Hello! I made this recipe and they turned out lovely! I was wondering if I could melt the white chocolate down and mix it with the butter though? I usually bake blondies this way and I like the fudgey texture it creates. Would that work?

  23. Eisa on March 26, 2021 at 9:00 pm

    Hi how do you mix the butter and sugars with an electric whisk or a normal whisk

    • Jane's Patisserie on March 27, 2021 at 9:50 am

      Hello! Either will be just fine!x

  24. Claudia Martin on March 26, 2021 at 2:52 pm

    Hi Jane,

    I have a rectangular tin which works out around the same dimension as in the recipe. (10″x7″) Would this still work using the same ingredients?

    Thank you in advance

    • Jane's Patisserie on March 27, 2021 at 10:20 am

      Hello! Yes that should be fine xx

  25. Reanne on March 20, 2021 at 3:26 pm

    5 stars
    Worked perfectly, very pleased!
    I halved the recipe and baked in a 7.5 round tin for 25-30 minutes.
    This is one of my new favourites!

  26. Danielle on March 16, 2021 at 2:24 pm

    5 stars
    This is the first thing i’ve made where i’ve thought ‘wow, i could sell this!’. It was that good! And so simple!

  27. Helloall on March 14, 2021 at 8:57 pm

    5 stars
    Tried this recipe last night for the first time after eyeing it up for a long time.
    It did not disappoint. Straight out the oven it smelled a amazing and very like a jam roly poly :).
    Cooled and sliced today and has had lots of compliments all day. Thank you for this. Delicious will definitely do again.

  28. Maddie on March 5, 2021 at 2:19 pm

    5 stars
    Hi Jane, I love your recipes!
    Just wondered what the difference between this method of Blondies and the method used in your raspberry and white chocolate Blondies is and which method you prefer?
    Thank you

    • Jane's Patisserie on March 5, 2021 at 3:23 pm

      They are just two completely different ways of doing it if you read the method – I like both though, but some people prefer the whisking method as its more similar to my brownies, whereas this method is simpler!

  29. Aimee on February 25, 2021 at 3:19 pm

    Hi Jane, I wanted to make this but half the size so I halved the ingredients and cooked it in a 9×5 size tin but I think I messed up on the cooking times as they were over done. How long would you recommend cooking for? Thanks x

    • Jane's Patisserie on February 26, 2021 at 3:36 pm

      Half would fit a 7×7″ square – but it would also take quite a bit less time. I am unsure on timings however as I don’t bake half sizes x

    • Amanda on October 13, 2023 at 8:00 am

      Hi I often bake half and I set my time for 18 mins. They are usually perfect

  30. Simone on February 11, 2021 at 8:54 pm

    Hi jane
    Can I use clover light instead of unsalted butter for these??
    Many Thanks

    • Jane's Patisserie on February 12, 2021 at 8:19 am

      I would recommend a block butter or baking spread, not a light spreadable butter x

  31. Jane on February 8, 2021 at 9:23 am

    5 stars
    Hi, is there any way you could add melted white chocolate to the batter?

  32. Jane on February 7, 2021 at 3:00 pm

    Hi, is there any way you could add melted white chocolate to this mix as well as or instead of the chocolate chips?

    • Jane's Patisserie on February 8, 2021 at 8:58 am

      For this base recipe I don’t use melted white choc – I will be uploading one to my blog at some point x

  33. Courtney on January 30, 2021 at 6:40 pm

    5 stars
    These were incredible! The best thing I have made yet! Another brilliant recipe 😊

  34. Emma on January 26, 2021 at 10:08 pm

    2 stars
    Either came out over cooked and cakey or not even cooked at all. Despite following the recipe down to a T and reading other comments seems like it happens a lot, but the writer doesn’t want to hear it..

    • Jane's Patisserie on January 27, 2021 at 7:54 pm

      ‘The writer’ does try and explain that it can happen, as blondies are one of the hardest things to get perfect and you will find this with many other recipes too. Unfortunately it doesn’t work for everyone and there are varying reasons as to why which I have explained in the comments.

  35. Rhiannon Williams on January 26, 2021 at 8:30 pm

    5 stars
    Honestly, these are mazing! Do you think it is OK to freeze them and how long would they last in the freezer if so?

    • Jane's Patisserie on January 27, 2021 at 7:54 pm

      Ahh yay! And yes you can – up to three months!! xx

  36. Heather on January 25, 2021 at 9:25 pm

    2 stars

    I followed the recipe to a t; weighed every exact ingredient, used a 9×9” tin, preheated the oven to the right temp (an oven which I’ve never had a problem with before.)

    They’ve been cooked for well over 2 hours and are still completely raw in the middle, and solid like biscuit around the edge, bordering on burned . I suspect that adding jam to the top pre-baking, as well as already cooked Jammie Dodgers, doesn’t really work that well. Sad, because they look amazing.

    • Jane's Patisserie on January 30, 2021 at 7:52 pm

      It’s so strange as two hours in an oven and nothing should be raw! I’m sorry I haven’t experienced this problem to help more, but it can sometimes be down to the mixing, but blondies are classically really annoying sometimes!

    • Katy Babbs on March 17, 2021 at 11:35 am

      I had the same problem too! Mine took forever to cook and I don’t know why! I’m an experienced baker and followed the recipe exactly. I’m have a second attempt to see if I can get it right 😀😀

  37. Amber on January 23, 2021 at 10:19 pm

    I baked these at the correct temp for 40 minutes (covered with foil for the last 10) and they were soooo raw in the middle 😩 my mixture was also like cake mixture texture and thickness!
    Also, do these set and cut better when put in the fridge? Would you then take them out the fridge, cut them and let cool to room temp before eating

    • Jane's Patisserie on January 30, 2021 at 7:55 pm

      My mixture is reasonably thick, but it’s not something I have to spread (so I’m not sure where yours was?) – but yes, fridge or even freezer for a bit will help set them! You can cool them in the tin and then fridge for a few hours at least or even over night and then cut x

    • Ani on February 9, 2022 at 6:31 pm

      I have got the same problem! Have tried them twice, they were only in the oven for 20min, the outer edges were cake like but middle raw! Really would like to make this work cause the brownie recipe comes out brilliant every time 🙁

    • Jane's Patisserie on February 15, 2022 at 3:10 pm

      Hiya! Jane always bakes for 25 mins with no issue – it may be worth checking your oven temperature with an oven thermometer, or leaving them to ‘set’ overnight in the fridge. Hope this helps! x

  38. Daniel on January 22, 2021 at 3:42 pm

    Hi these look amazing is there any may I could make them in an 8×8 inch instead?

  39. Kay on December 11, 2020 at 7:00 pm

    This took two hours to cook, odd because just yesterday I made another one of your blondies and it was perfect! Today I followed each and every step, and it took so long, definitely not worth the wait as it now resembles cake 🙁

    • Jane's Patisserie on December 11, 2020 at 9:06 pm

      What other recipe did you try? If it’s like cake they are over baked for sure!

    • Roxanne on January 1, 2021 at 10:02 pm

      I have cooked your brownies and blondies twice each and the brownies have come out delicious both times but the blondies are like cake.I put them in the oven for a little less time the second time but no joy.I am using an electric whisk and when putting in the tin it’s more dough like,Should it be more liquid like? And should I beat only instead of using a whisk? And or put less eggs in? Any suggestions would really help x

    • Jane's Patisserie on January 3, 2021 at 12:04 pm

      If they are turning out like cake, they are just over baking. They are very different in recipe to the brownies so it’s not the best comparison, but blondies can classically turn out like cake if over baked. You may just need to lower your oven temp by 20c, or bake less x

  40. Sophie on November 5, 2020 at 10:00 am

    5 stars
    Is unsalted butter and baking butter the same thing?

    • Jane's Patisserie on November 5, 2020 at 3:33 pm

      Unsalted butter is block butter, usually wrapped in foil. I don’t call anything baking butter – do you mean baking spread? They are different things – but in this recipe both would work.

  41. Lisa on November 3, 2020 at 12:09 pm

    Hi Jane
    I’m just wondering if you could freeze these?

    • Jane's Patisserie on November 3, 2020 at 2:29 pm

      You can do! The Jammie dodgers don’t stay firm but they won’t anyway so it’s fine! x

  42. Curtis on November 1, 2020 at 3:35 pm

    Hi! I’ve baked these today using a 13inx9in Wilton tin and I was disappointed as they came out cakey instead of blondies! Was this because of the tin size because I had the correct ingredients measured properly! And also it took about an hour for them to bake so it was really slow:((

    • Jane's Patisserie on November 1, 2020 at 7:26 pm

      The recipe is designed for a 9″ square – a 9×13″ is roughly 1.5x the recipe so a lot bigger and not suited for this recipe. This will 100% affect how it bakes unfortunately! They sound over baked as well (but they will if they are in the wrong tin)

    • Curtis on November 8, 2020 at 3:00 pm

      I’ve tried baking them today again with the correct tin this time, I baked them for 40 minutes and they still came out cakey? I’m not sure what’s going wrong because after 30 minutes they were still raw so I had to put them back in

    • Jane's Patisserie on November 9, 2020 at 11:05 am

      So yes they are still over baked – they won’t have changed from completely raw to baked with the 10 minutes, it’s likely that they only needed a couple minutes extra. You also need to remember that they will continue to bake slightly whilst cooling so they simply needed to come out earlier.

    • Curtis on November 15, 2020 at 1:55 pm

      This is my third time today attempting these! I made these last night, I put them in the oven for 25 minutes and they seemed a bit raw so I left them to cool and I put them in the fridge overnight. Today I’ve taken them out of the fridge and the outside was cooked but the middle was still raw, so I put them back in the oven for 5 more minutes and they’re still cooked on the outside but not on the inside. Should I put them in for longer??

    • Curtis on November 16, 2020 at 11:56 pm

      Maybe it’s because I’m leaving the cornflour out all the time??

  43. Sophie on October 29, 2020 at 9:42 am

    5 stars
    After a failed attempted due to incorrect tin size, I ordered the recommended one and this has gone perfect every single time!
    Massive thank you for sharing such brilliant recipes and ideas ❤️

  44. Emily on October 22, 2020 at 7:07 pm

    5 stars
    I LOVE these. I’m wanting to make them for my friend but they need to be GF. How much GF flour do I use and do I need to use Xanthan gum?

    • Jane's Patisserie on October 22, 2020 at 7:17 pm

      I would just use a straight swap for flour, and GF Jammie dodger alternatives! x

  45. Tracy Lissemore on October 8, 2020 at 10:20 pm

    Jane, could I make my own jam and put it in the blondies instead of using the jar jam
    Thanks x

  46. Nicole on October 7, 2020 at 10:12 am

    Can I make these and leave out the jam, to make them a plain and simple blondie? Or will it cause issues with the mixture/bake?

    • Jane's Patisserie on October 7, 2020 at 2:17 pm

      It can make them take less time to bake, but otherwise works fine!

  47. Asha on September 14, 2020 at 2:51 pm

    5 stars
    I think I’ve used a deeper tin as it’s cooking on outside and not the middle 😓 it smells amazing though! I’ve turned it down and hopefully cooking longer and slower will be ok xx

    • Jane's Patisserie on September 14, 2020 at 8:12 pm

      If the tin is smaller it can definitely cause a problem with baking – but cover with foil and bake until there is a small wobble and then refrigerate over night once cooled x

  48. Hidayah on September 2, 2020 at 10:54 am


    Just wanted to know if I could use caster sugar instead of granulated? xx

    • Jane's Patisserie on September 2, 2020 at 3:10 pm

      You can, but I much prefer granulated for the best results x

  49. Jodie Dozey on September 2, 2020 at 10:09 am

    5 stars
    Hi, I’m attempting to make these for my nephews birthday on Sunday. Do uou reccomended baking the night before or on the day?

    • Jane's Patisserie on September 2, 2020 at 3:11 pm

      They easily last a few days once made, so you could bake them the night before and set them in the fridge for a few hours to get the best texture and then enjoy on the day! X

    • Jodie on September 6, 2020 at 7:32 am

      I think I swirled the jam in too much so when cooking. I thought there was batter coming out on my knife but I think it was just the jam so then I overcooked them 😕

    • Jane's Patisserie on September 6, 2020 at 9:13 am

      Ahh okay, yes you need to swirl the jam in ever so slightly so it doesn’t sink/look like batter! If in doubt, warm them up with a bit and serve with custard and they’d still be yummy!

  50. AM on September 1, 2020 at 10:27 am

    Hi Jane,

    I want to half this recipe and use a smaller baking dish, can you let me know what timing you would use for baking please? I am going to be doing around 4 of your recipes one on day so i need to make some of the recipes smaller!


    • Jane's Patisserie on September 1, 2020 at 9:26 pm

      Hiya – I only make this in 9″ squares so I haven’t tested it any smaller, but half would be about a 7″ square, and I imagine 18-20 minutes or so? x

  51. Bethan on August 17, 2020 at 9:45 pm

    I just made these and I baked them for over 40 minutes. No matter how long I baked them the middle was still raw and would not cook! I followed the recipe to a T so I’m really confused as to what happened! If I made my mixture too thick, what would be the best way to thin it out for the next time I make them? Thanks!x

    • Jane's Patisserie on September 14, 2020 at 8:53 pm

      Unfortunately this does mean the process you did was incorrect somewhere – as long as you used the correct ingredients. You don’t want to alter the recipe to thin it out, as the mixture should be thick. It may be your oven, it may be how you are mixing it. Blondies and brownies are classically annoying to bake for some people – but they are 100% worth it when you get there. x

    • Farah on January 23, 2021 at 4:50 pm

      Hi I wondered if I could use white milkybar chocolate instead of the chocolate chips. Would that be OK? Thank you for sharing your recipes.

    • Jane's Patisserie on January 23, 2021 at 5:43 pm

      Yes of course! Any chopped up bar of chocolate works instead of chips x

  52. Anna on August 9, 2020 at 8:53 pm

    Hi Jane, Really adore your site and recipes but I was wondering if the baking time would change considerably if I used a glass baking dish lined with foil??

    • Jane's Patisserie on August 10, 2020 at 9:42 am

      It can do – different types of dish can change the timing because of how it conducts the heat – I don’t bake in glass dishes often (and generally, I find lining with parchment/greaseproof better than foil)

  53. Amanda on July 27, 2020 at 8:38 am

    5 stars
    OMG these were absolutely amazing! Would highly recommend and I’ll definitely be making them again! Thank you! X

  54. Lauren Greening on July 23, 2020 at 1:04 pm

    When cooling them. How long do you cool them before putting them in the fridge and how long do you put them in the fridge for?

    • Jane's Patisserie on July 23, 2020 at 7:22 pm

      I usually cool them fully before putting in the fridge personally!

  55. Paris Anysia Coldwell on July 23, 2020 at 11:42 am

    Hey, I’m wanting to make this and the slutty brownie but in a 9×13 tin. By how much would I increase the recipe and how much longer would I bake them for?

    • Jane's Patisserie on July 23, 2020 at 7:22 pm

      You’d need about 1.5x the recipe, and I’m unsure of timings sorry!

  56. Emily on July 22, 2020 at 5:23 pm

    4 stars
    Hi Jane,
    My blondies turned out cake like on the outside and completley raw in the middle. They were in the oven for around 40minutes. I used the exact ingredients. Not sure what went wrong? (The bits that were cooked were delicious though!) X

    • Jane's Patisserie on August 2, 2020 at 6:34 pm

      This is often just a case of mixing incorrectly or different ingredients – the mixture should be nice and thick, but not quite as thick as a cake mix – try lowering the temp and baking for longer (covering with foil after a while to prevent burning the Jammie Dodgers). Blondies/brownies are a classic bake that can cause problems when baking unfortunately! x

  57. Yehonatan on July 21, 2020 at 10:13 am

    5 stars
    Where can I get this cookie mold cutter?

    • Jane's Patisserie on July 21, 2020 at 1:59 pm

      It’s two different cutters, a circle and a heart – you can buy them in loads of places and online.

  58. Sandy on July 20, 2020 at 2:19 pm

    5 stars
    Amazing recipe! whisked the sugar and butter for about 2 mins and just mixed everything else in as little as possible. 30 minutes and amazing after being set in the fridge! so fudgy!

  59. Chloe on July 19, 2020 at 1:33 pm

    Mine ended up like a cake and somehow rose quite tall… I used all of the right ingredients though, I’m thinking I possibly over mixed? So tasty still!

    • Jane's Patisserie on July 19, 2020 at 4:09 pm

      Cakey texture usually means it’s over baked. Did you use the right size tin? x

    • Chloe on July 20, 2020 at 11:43 am

      I used a 8.5 x 8.5 tin. I did bake it for a lot longer than the recipe said but that’s because the middle took so long to cook; when I was doing the skewer test the middle was all goey batter still. Do you know why it would’ve rose so tall too? Could that be because of over baking it as it didn’t inflate for the first half of baking. Also, when adding the flour is it best to mix it in with my stand mixed or just fold it in like you do with brownies? Overall although it certainly didn’t turn out as a blondie, I was still happy with it as it was a really tasty jammy dodger cake! Hopefully next time I’ll get blondies 😆

    • Jane's Patisserie on August 2, 2020 at 6:35 pm

      I mix in the flour in these with my stand mixer, but it maybe be that you added too much air which could cause the rising? It’s hard to say – as long as you used the correct ingredients they will rise slightly, but the smaller tin will naturally make them deeper! X

  60. Isabel on July 16, 2020 at 11:19 am

    I can’t get plain flour?! could I use self raising in these at all? Thanks

    • Jane's Patisserie on July 16, 2020 at 12:07 pm

      If you use self raising they will most likely turn out like cake due to the raising agent, but if you’re not bother by that then it will still work!

  61. Chloe on July 14, 2020 at 10:39 pm

    Hi Jane, can you use stork instead of butter in these?

    • Jane's Patisserie on July 15, 2020 at 12:05 pm


    • Steph on May 4, 2022 at 10:19 pm

      5 stars
      I definitely accidentally used caster sugar instead of granulated sugar… what kind of difference will that make to the overall outcome?

  62. Nicole on July 13, 2020 at 12:01 pm

    These are a hit in my house! How much would the recipe need to change if I was to use a smaller tin or foil trays to bake?

    • Jane's Patisserie on July 13, 2020 at 12:52 pm

      Hey! That depends on what size of tray you wanted to use instead as they can vary loads!

  63. Katie on July 12, 2020 at 6:16 pm

    These look amazing! Do you reckon I could freeze them?

  64. Emma on July 12, 2020 at 2:19 pm

    4 stars
    I made these for the first time, cooked them for 37 minutes and took out as slightly wobbly in middle like you said and def ready round the outside left to cool for a few hours put in fridge before cutting and the middle when cutting fell apart couldn’t pick it up was just goo. I have a gas oven but I have a thermometer in it so temp should be correct.
    Will try again for longer next time!
    Thanks for the recipe ☺️

    • Jane's Patisserie on July 15, 2020 at 12:06 pm

      Hey! Yes unfortunately sometimes the mixture can take longer in some ovens – kinda like brownies! Try not to over mix, but also may lower the temperature and bake for longer so the outside doesn’t over bake!

  65. Jess on July 11, 2020 at 12:53 pm

    5 stars
    I made these yesterday in 2 tins one is amazing other is cakey and dry? They both cooked for same amount of time , what happened 🙁 x

    • Jane's Patisserie on July 11, 2020 at 7:43 pm

      Sorry I’m confused.. did you use two tins for the same amount of mix as listed or make a double batch of the recipe and bake into two different tins? Either can definitely contribute towards it if the mix is different to what I have stated – or it could even just be your oven!

  66. Carrie on July 10, 2020 at 10:59 pm

    I made these and the biscoff blondies today and both came out pretty cakey but with a totally raw middle? I’m baffled, I did everything down to at ee. 🤷‍♀️

    • Jane's Patisserie on August 2, 2020 at 6:36 pm

      Unfortunately something will have happened to cause this as they do work perfectly for lots of people – This is often just a case of mixing incorrectly or different ingredients – try lowering the temp and baking for longer (covering with foil after a while to prevent burning the Jammie Dodgers)!

  67. Sadie Rowland on July 9, 2020 at 3:02 pm

    5 stars
    Hi jane
    The blondies are coming g out like sponge cake?

    Thank sadie

    • Jane's Patisserie on July 9, 2020 at 6:04 pm

      The oven is too high, or you’ve baked for too long!

  68. Sinéad on July 7, 2020 at 10:32 am

    5 stars
    Fantastic recipe. New favourite treat in our house!.. Thank you for posting

  69. Kelly on July 6, 2020 at 11:37 am

    5 stars
    Hi made these yesterday in an 8″ tin and like your recipe said it needed longer but then ended up being more cakey (absolutely delicious though!!!) How would you modify the recipe fit an 8″ tin either in terms of ingredients, bake time, temp?

    • Jane's Patisserie on July 6, 2020 at 11:57 am

      Hey! Ahh yes that can happen unfortunately when the tin sizes change! Typically it’s about 0.8x the recipe so if you reduce everything by about 1/5 it should be okay! Temp would be the same, time should reduce slightly x

  70. Becky on July 2, 2020 at 9:49 pm

    Absolutely love these!! Followed your recipe exactly and took onboard your notes and they seemed to pay off! Slightly gooey in the middle still, couldn’t seem to get them to set as much as the outside ones but sooo yummy!

    Thank you x

  71. Bexii j on June 30, 2020 at 3:10 pm

    4 stars
    The tasted beautiful but despite following the recipe and ingredients to a tee the mix going in wasn’t spreadable but pourable.

    Where do I need to mix more? It says mix sugar and butter for several minutes so I did 5 till it became lighter. After adding eggs and vanilla I beat again but only mly got a couple of mins as it came smooth so I need to beat this more so it firms up a bit?

    Many thanks

    • Jane's Patisserie on June 30, 2020 at 7:11 pm

      How did they turn out despite the difference in how it went into the tin? If they still baked fine I wouldn’t change anything personally. If you read the recipe post I mention how I beat my butter and sugar for about 2 minutes, so it may be that you mixed it too much x

  72. Elsa on June 29, 2020 at 5:23 pm

    4 stars
    Hi Jane,

    I tried to bake these, but they rose a little and I can’t for the life of me get the middle bit cooked. Popped some foil over so I’m hoping that works

    • Jane's Patisserie on June 29, 2020 at 7:23 pm

      Hey! How did you mix the mixture? And did you sub any ingredients (such as a different sugar) x

  73. Jenny on June 27, 2020 at 11:20 am

    Hi Jane, wasn’t able to get white choc chips could you milk instead? Thanks 😊

    • Jane's Patisserie on June 27, 2020 at 11:32 am

      Yes definitely!! Or you can chop up a bar of white chocolate! x

  74. Mia on June 26, 2020 at 3:11 pm

    Mine are currently in the oven!! Although I accidentally picked up an 8” baking tray, hoping an extra 10-15 mins in the oven should be okay! Love your recipes! 🙂 Xx

    • Jane's Patisserie on June 26, 2020 at 3:33 pm

      Hey! Yes hopefully they will, I hope you love them!! xx

  75. Emma Bryant on June 26, 2020 at 10:31 am

    Made these yesterday! I over baked them as they were like sponge but every time I took them out of the oven the middle was still very wobbly and when testing them with the skewer it wasn’t clean/crumbs. Want to try them again as I want to get it right!! They were still yummy though!!

    • Jane's Patisserie on June 26, 2020 at 11:01 am

      Ahh oh no! There definitely is a fine balance when it comes to blondies/brownies – maybe reduce by about 5 minutes and see how you get on!

  76. Sophie on June 25, 2020 at 11:53 am

    Do we have to wait for the melted butter to cool down before mixing with the sugars? 🙂 x

  77. Catherine on June 25, 2020 at 7:42 am

    Can’t wait to make these on the weekend… would it be ok to use all caster sugar instead of brown & granulated? Thanks x

    • Jane's Patisserie on June 25, 2020 at 11:33 am

      I personally think caster sugar can end up cakey if you aren’t careful so as long as you don’t over bake they’ll be okay!

  78. Mary on June 24, 2020 at 6:53 pm

    Hi Jane!

    Was super excited to make these but after 40+ minutes in the oven on the right temp my jammy dodgers had burnt but the middle of my blondies was still raw mix!! Any tips? I’d love to make them again 🙂

    • Jane's Patisserie on June 25, 2020 at 2:55 pm

      How thick was the mixture going in? It shouldn’t take so long, but it can do sometimes depending on the mixing process! Try and measure every ingredient exactly, and make sure your oven is the right temp! Often ovens can be the wrong temperature to what you think for example! xx

  79. Sophie on June 24, 2020 at 1:33 pm

    Hey, I really want to make this but just really scared about them being under baked. If they have been in the oven for 30 minutes and they are still gooey/looking underdone, will they still be safe to eat once they have cooled? Xx

    • Jane's Patisserie on June 25, 2020 at 2:54 pm

      Hey! I generally say yes they are but that’s my personal opinion!! – if in doubt, cover with foil and bake for a bit longer – and once cooled set in the fridge to firm them up! X

  80. Hollie on June 23, 2020 at 6:39 pm

    Hey Jane

    How would you adapt this recipe to be vegan/dairy free?

    Thank you!

  81. Natasha on June 23, 2020 at 9:27 am

    Do you use the standard or low fluidity callebaut callets?

  82. Caren on June 22, 2020 at 1:24 pm

    Would gluten free flour and vegan white chocolate work in these?

    • Jane's Patisserie on June 22, 2020 at 9:20 pm

      I have never tried the GF flour in these blondies yet, but I don’t see why not for either!

  83. Chloe Humphreys on June 22, 2020 at 8:27 am

    Hi Jane

    I can’t wait to make these! Do you think it would be OK to add the jammy dodgers half way through baking or definetely put them in from the start? I ‘m worried my oven will burn them :)X

    • Jane's Patisserie on June 22, 2020 at 9:07 am

      I put them in at the beginning – if it burns your oven is too hot! x

    • Naomi on June 24, 2020 at 8:24 pm

      Hi Jane,
      I did your white chocolate and caramel blondes but they turned out like a sponge. I cant seem to get the hang of making blondes.

    • Jane's Patisserie on June 24, 2020 at 9:40 pm

      That just means you have over baked them! Reduce your baking time and it should be fine!

    • Matt on June 28, 2020 at 2:56 pm

      How would the baking time vary for a brownie pan with sections in?

    • Jane's Patisserie on June 28, 2020 at 5:08 pm

      Yes it could do xx

  84. Maz on June 21, 2020 at 10:47 am

    These look delicious! Your recipes are literally the best! I wanted to ask can baking spread be used or does it have to be actual butter? Thank you xx

    • Jane's Patisserie on June 21, 2020 at 3:24 pm

      Baking spread can definitely be used for blondies!

  85. Zoe Williams on June 21, 2020 at 8:05 am

    4 stars
    Fab recipe!
    *where to add vanilla essence though as lists in ingredients

    • Jane's Patisserie on June 21, 2020 at 3:25 pm

      It’s optional – but you can add it in with the eggs.

  86. Natasha on June 21, 2020 at 7:51 am

    Hi Jane,
    Do you use an electric hand whisk for your blondie mixture or just a normal one?

  87. Fran on June 20, 2020 at 8:38 pm

    Is there a way to adapt this to include frozen raspberries in the batter?

    • Jane's Patisserie on June 21, 2020 at 3:28 pm

      You can add some in, but I would reduce the jam – maybe 100g of each!

  88. Lindri Mander on June 20, 2020 at 8:13 pm

    Hi Jane just wondering how many large eggs should I use, I don’t have medium.

    • Jane's Patisserie on June 21, 2020 at 3:32 pm

      I would use three large x

    • James on June 30, 2021 at 6:14 pm

      Hi Jane. Im just wondering what attachment needs to be used for the stand mixer? Whisk or beater? Or both?

    • Jane's Patisserie on July 3, 2021 at 12:23 pm

      For this I use the beater x

  89. Lyn on June 20, 2020 at 6:24 pm

    Hi Jane where do you buy your baking paper from?

    • Jane's Patisserie on June 21, 2020 at 3:29 pm

      Just the supermarket – I swap between loads but usually its bacofoil!

  90. Roz on June 20, 2020 at 6:19 pm

    Can you freeze these?

    • Jane's Patisserie on June 21, 2020 at 3:30 pm

      Yes! x

    • Laurenne on July 17, 2020 at 11:39 am

      5 stars
      Made these yesterday without the Jammy dodgers to grasp the blondie making.. turned out amazing! Super moist and fudgey! Everyone loved them! Thank you for your amazing recipes! xx

  91. Alison on June 20, 2020 at 10:01 am

    5 stars
    Cannot wait to make these! They look delicious 😋

  92. Sienna on June 20, 2020 at 8:25 am

    5 stars
    Oh my gosh these are so CUTE! They look lush can’t wait to make them😍😋xx

  93. Laura on June 20, 2020 at 8:07 am

    Hi Jane, I can’t wait to make these. I’m new to blondies and need more practice with brownies! Can I ask what chocolate you use for both? I wanted to bulk buy and was going to go for callebaut callers, or would you recommend something else?
    Thanks so much.

    • Jane's Patisserie on June 20, 2020 at 8:37 am

      Hey!! I use callebaut yes – I buy the 2.5kg bags of the white, milk and 70.5% dark! X

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