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A complete ‘how-to’ guide on how to make millionaires shortbread! A homemade shortbread base, homemade caramel filling, and a chocolate topping. 

So it’s been a while since I posted my last ‘back to basics’ post – my last being my no-bake lemon cheesecake post in May last year. And after the success of my youtube video on how to make Millionaires Shortbread, I thought I’d do the blog post for it too

I have obviously made quite a few millionaires shortbread recipes already, but I thought I would cover it down to every last detail. Basically, completely dumb it down into the ground so that if you are scared to make it, you won’t be any more

Shortbread

For the shortbread, it really is quite basic – you can do it by hand, or in a food processor, or in a stand mixer, or with an electric hand mixer. You just want to mix the sugar and butter together until creamy, and then add the flour and combined until a dough is formed.

If you are doing this by hand, you can add all three ingredients together, making sure the butter is cold and cubed, and rub the mixture together with the tips of your fingers until it creates a bread crumb texture. Then, you effectively knead it together to form the dough.

I always tend to use classic unsalted block butter but you can use a baking spread for this bit if you prefer. I just prefer the taste when it comes to real butter. When using a mixer to make it, you add the butter and sugar together, beat until creamy, and then add in the flour and combine.

Baking

Press the shortbread into a lined tin – I use a 9″ square tin – and make sure it’s even. I use a 9″ square tin as it’s the ultimate depth for the number of ingredients I use! If you use a smaller tin, it will take longer to bake – if you use a larger tin, you might have issues as the shortbread really isn’t that thick. 

You bake it in the oven at 160ºc in a fan oven, 180ºc regular, and bake until it’s starting to golden. When it’s starting to golden, and it’s been in for at least 20-25 minutes, you’ll know it’s baked through.

Caramel

For the caramel, you REALLY have to work on it. You can’t cheat and use a tin of carnations caramel and stick it on top as it doesn’t set. You can’t really skip the steps, as it really is a caramel. I don’t often make my caramels from complete scratch as many of my readers prefer the easier versions, and I get that, but for millionaires shortbread? You do.

You have to make sure to stir the caramel a lot to prevent it from catching and burning. I use a medium level of heat, and a larger pan so its easier to stir. You have to be careful as it obviously does get VERY hot, but it’s worth it. It is delicious and heavenly.

I use a gas hob because I much much prefer it for making caramel. I get that not everyone has gas though – some have electric, some have induction – but on my gas hob, I usually use between level 7 and 6 of strength on a medium-size ring, on my 9 level hob. 

You want to use actual unsalted butter – as it creates the best caramel. I use golden syrup, because it creates the most wonderful caramel, as I explain in my video. If you can’t access golden syrup, however – I suggest using the caramel from this recipe post instead

Caramel problems

I’ve received comments about people getting little dark coloured lumps in the caramel, and this is down to catching. Once it’s caught, there isn’t really anything you can do, other than preventing it from getting any more burnt. 

If your caramel is grainy by the end, that’s because you didn’t dissolve the sugar properly at the beginning. You really want to slowly melt the condensed milk, golden syrup, sugar and butter together before it starts to boil – then it will be lovely and smooth. 

The timing is something I can’t really narrow down on. It takes between 5-7 minutes to boil. This can vary depending on the type of stove you use, the brand of ingredients, the pan you use, and so on. I don’t boil the caramel to temperature, and I never have. 

Once you have poured your caramel onto your shortbread, you have to leave it to set. I usually do this in the fridge because it’s quicker. Once it’s set, you add the chocolate

Topping

The chocolate part is quite straight forward – you just want to melt it, and cover the top, and let it set as well. I used a mix of milk and white chocolate, but you can use whatever you fancy! All milk, all dark, all white.. or all three! Any flavour you fancy too. It’s epic and easy.

I find it easier to melt my chocolate in a microwave, but this is something I have done many times. I know my microwave in and out, but if you don’t have on, you can melt your chocolate in a double boiler which is a bowl, over a pan of simmering water. 

Of course, once you have decorated your millionaires with the chocolate, you need to leave it to set. I find it easier to set it in the fridge as it’s much quicker, but that is optional. If you set it at room temperature, then it will take longer but it will be easier to portion. 

Portion

So… once you’ve reached the end of making it, you enjoy it. However, cutting it up can be an issue for some. As I used a 9″ square tin, I use a 26cm knife to cut it. This is because the knife is larger than the traybake, and it makes it a hell of a lot easier. I tend to make sure it’s straight, score the chocolate ever so slightly, and then just cut straight down. 

You can try a few different other things, such as scoring the chocolate when it’s not fully set yet, or heating the knife before cutting – but honestly, I just find using a large and sharp knife and going straight down is the best method for me. Some people even try cutting the traybake upside down so that the chocolate is the last bit you cut through. 

Top tips 

If you find once your millionaires shortbread is finished, that the caramel is rock solid and more like toffee, you overdid it slightly on the boiling. It’s best to keep and store it at room temperature from now on, so it’s at least not fridge cold hard. If your caramel is too soft, you didn’t do it for long enough, so should definitely be kept in the fridge.

You want to use a good quality pan if you can, as some pans have a very thin base. Basically, if the base is too thin, you might burn the caramel. So if you are worried, take the temperature down a notch and do it for a little longer instead to prevent any catching!

You also want to use a flat bottomed spatula, like these ones. Using a spatula with a sharp corner means you can really scrape the caramel, and prevent it from catching in the corners!

  • I use this 9″ square tin
  • The millionaires shortbread will last for 7 days at room temperature, or in the fridge 
  • The millionaires shortbread can freeze for 3+ months 

Millionaires Shortbread!

A complete 'how-to' guide on how to make millionaires shortbread! A homemade shortbread base, homemade caramel filling, and a chocolate topping. 
Print Pin Rate
Category: Traybakes
Type: Millionaires Shortbread
Keyword: Caramel
Prep Time: 20 minutes
Cook Time: 40 minutes
Setting Time: 3 hours
Total Time: 4 hours
Servings: 16 People
Author: Jane's Patisserie

Ingredients

Shortbread Ingredients

  • 200 g unsalted butter
  • 100 g caster sugar
  • 300 g plain flour **

Caramel Ingredients

  • 200 g unsalted butter
  • 3 tbsp caster sugar
  • 4 tbsp golden syrup
  • 397 g condensed milk (one tin)

Decoration

  • 200 g milk chocolate
  • 100 g white chocolate

Instructions

  • Preheat your oven to 180ºc/160ºc fan, and line a 9x9inch deep square tin with parchment paper.
  • Cream together the sugar and butter in a stand mixer with the paddle attachment until smooth – mix in the flour until a dough is formed. It will be crumbly but the ingredients will be evenly dispersed!
  • Firmly press the mixture into the bottom of tin and bake in the oven for 20-25 minutes until pale golden on top!
  • Once baked, remove from the oven and leave to the side. In a large saucepan pour the condensed milk, butter, sugar, and golden syrup and melt on a medium heat until the sugar has dissolved – stir frequently to stop anything from catching.
  • Once the sugar has dissolved, turn the heat up high and let the mixture come to boiling point and boil for 5-7 minutes stiring constantly so that the mixture doesn’t catch. BE CAREFUL as the mixture is VERY hot and can burn you if it splashes back! 
  • The mixture will be ready when it has changed to a slightly darker golden colour, and has thickened to a soft fudge texture!
  • Pour the caramel onto the shortbread base and leave to set for an hour in the fridge.
  • Once set, melt the milk chocolate and pour over the caramel – melt the white chocolate and pour over too - swirl it into the milk chocolate with the end of a cake skewer so it forms a pretty pattern.
  • Chill the shortbread back in the fridge for another 1-2 hours until the chocolate has gone hard**!
  • Chop your shortbread into the separate pieces and enjoy!

Notes

  • This will keep in an airtight container for at least 1 week – if they last that long
  • If you can't access golden syrup, you can give corn syrup or honey or similar a go, but I have not tested these as much. Alternatively, you can use my millionaires flapjacks caramel
  • If your caramel is rock solid when you remove it from the fridge, you have slightly over done it. Not to worry though, when you pour the chocolate on, leave it to set at room temperature rather than in the fridge and it should soften the caramel slightly.
  • **If you struggle to cut your shortbread and tray bakes without the chocolate cracking on top, set it at room temperature rather than in the fridge and it’ll be softer so therefore won’t crack when you cut it
  • I recommend using a 9" square tin like this one
  • I also recommend using a spatula like these to prevent any catching
  • And if you are wondering - this is the golden syrup I use
  • ** recipe updated to be 300g instead of 275g plain flour for ease of using a 1:2:3 ratio with sugar, butter and flour  - both quantities work well so continue to use 275g if you prefer it. 

ENJOY!

Find my other Traybake Recipes on my Recipes Page!

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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.

468 Comments

  1. James on March 10, 2021 at 9:58 am

    3 stars
    I had a go at this recipe and am a little disappointed. It is highly indulgent for a start but then that goes with the territory. Thought the base and the caramel use a bit too much butter. My main problem was the base. My shortbread was very dense. I used a mixer as shown in the video and this made the mix into a heavy paste. I think I would have been better to hand blend the ingredients to make it a little more crumbly. I also found it very dense to cut and my chocolate has a habit of splitting and doesn’t have those nice sharp edges shown in the photos. I tried warming the knife and that helped a bit. Again this was probably my own fault as I had put the final product in the fridge overnight to set. I ‘m just an amateur but would appreciate any feedback.

    • Jane's Patisserie on March 10, 2021 at 8:04 pm

      The best thing I can recommend is to watch the YouTube video of me making this – its visual so may show you where things went a little different for you. x



  2. Lauren Rodgers on February 11, 2021 at 3:46 pm

    5 stars
    I just want to say a huge thank you for this caramel recipe. I’ve tried and tested so many different caramel recipes and they all ended up in disaster up until now! I follow all your recipes and im a huge fan of your baking so this has honestly made my day. My caramel shortbread looks amazing and my hubby is certainly impressed. 💖

  3. Dave on February 11, 2021 at 10:36 am

    Hi Jane,

    I want to use a 22cm x 5.5cm rectangle baking tin, what would be the ingrediants converstion for this.

    • Jane's Patisserie on February 12, 2021 at 8:25 am

      Hiya – I just want to double check those measurements. Is it long and thin? 5.5cm is very small for one side of a tin!



  4. Lauren on February 3, 2021 at 7:36 pm

    4 stars
    Love your recipes!! This is the first one I had trouble with!! The caramel was quite hard!! Not sure if I maybe cooked it too long?
    I prefer quite soft caramel!
    The shortbread base was really nice though!

    • Jane's Patisserie on February 3, 2021 at 8:36 pm

      Yes that just means its slightly over done! x



  5. Jo on February 2, 2021 at 4:24 pm

    5 stars
    I have made these so many times, always the same way and strangely sometimes my caramel doesn’t seem to set. It feels firm and I leave it for a couple hours then add the chocolate, let that set and then cut it the caramel just seems to over time run off the shortbread. What am I doing wrong? Like I said sometimes it doesn’t happen 🤷🏻‍♀️

    • Jane's Patisserie on February 2, 2021 at 6:53 pm

      Do you always use the same brands of ingredients, same hob ring, same pan? Sometimes it purely is just the timing! x



  6. Charlotte on January 31, 2021 at 3:03 pm

    Hi Jane,

    If I’m using a 12×8 inch tin should i double the quantity for the caramel ? X

    • Jane's Patisserie on February 1, 2021 at 10:14 am

      You only need about a quarter more – definitely not double! x



  7. Dee Kennedy on January 30, 2021 at 6:08 pm

    Absolutely love this recipe. Everyone that’s tried some of my caramel cake states it’s the best they’ve had. Thanks so much for the recipe 😊

  8. Amy Pearce on January 27, 2021 at 6:34 pm

    5 stars
    Hi! This tastes great and for the most part looks great but after leaving the finished bake to set in the fridge, the chocolate topping came clean off (some of the pieces) when being cut into separate pieces. Any ideas on what I did wrong?
    Thanks! X

    • Jane's Patisserie on January 27, 2021 at 7:47 pm

      Sometimes this can be moisture between the layers – but it randomly happens!



  9. Hannah on January 25, 2021 at 9:11 pm

    Hi Jane! I made this today and it’s delicious but the caramel is a bit soft. I probably didn’t boil it for long enough (only around 4 mins) because I decided to take it off the heat as it was thickened and a little darker. Should I have boiled it for longer? If so, how do I tell when to take it off if it’s already at the right thickness? Also (sorry for so many questions!) but could using shop own brand condensed milk make a difference?

    • Jane's Patisserie on January 27, 2021 at 8:12 pm

      Yes it needed boiling for longer! I would recommend watching my YouTube video for this recipe as it may help! Own brand condensed milk wouldn’t have made a difference as long as it wasn’t ‘light’ xx



  10. Debbie Hunter on January 20, 2021 at 9:49 pm

    Made these today and went down a treat with my husband (he’s had 2 squares and is now in a sugar coma!). My caramel didn’t set very well though so they ended up all squished when I cut them, what did I do wrong? Thanks for the cracking recipes!

    • Jane's Patisserie on January 21, 2021 at 12:03 pm

      Usually this just means it isn’t boiled long enough (but make sure you have used the correct condensed milk – not the light one. And don’t have accidentally subbed for evaporated milk either) x



    • Gillian on February 14, 2021 at 10:08 pm

      So glad I read through these comments and saw Jane’s reply! Have made this recipe successfully twice (it was eaten within 24 hrs!) But this time my caramel was too soft despite cooking for more than 7 mins. Just noticed it’s evaporated milk I have used!!

      Worth noting the previous 2 times my condensed milk was the light kind and it worked ok.



  11. Lisa j on January 10, 2021 at 10:26 am

    5 stars
    Hi, I’m new to your site but it’s brilliant! I made this but the chocolate hasn’t stuck to the caramel in places. What did I do wrong? Thanks

    • Jane's Patisserie on January 10, 2021 at 2:01 pm

      Did you set the caramel in the fridge? Sometimes moisture can cause this problem but also sometimes not, its quite random!



    • Lisa jones on January 15, 2021 at 7:18 am

      Hi, I did set it in the fridge so was that the right or wrong thing to do? Thanks (ps it was still amazing)



    • Jane's Patisserie on January 15, 2021 at 8:27 pm

      No that’s fine, just sometimes it can happen annoyingly! x



  12. Nicolle on January 10, 2021 at 9:03 am

    Hi Jane!
    I’ve been using your recipes for the longest time now and have NEVER had a fail. Thank you!

    Me and my family are currently isolating due to my children and my husband being covid positive. I’ve had my shopping delivered and they substituted the condensed milk for caramel. I know you mention this won’t set- is there anything I can do to try and make this work?! Was really hoping to bring some sunshine into my home today with their favourite treat ❤️ I hope you are keeping safe.
    -Nicolle

    • Jane's Patisserie on January 10, 2021 at 2:02 pm

      Some readers have mentioned how they used the caramel in the same was as the condensed milk and it still worked, the flavour is just slightly different and using the colour to know when its done doesn’t work (because its immediately darker from the start) – but it should be okay! x



  13. Ian Hennessy on January 7, 2021 at 11:03 pm

    5 stars
    Great recipe.. Turned out really good and with the YouTube video helps alot when doing the caramel.. Thanks

  14. Jasmine on January 7, 2021 at 12:28 pm

    Hi Jane can I used evaporated milk instead of condensed milk for the caramel I’m self isolating and this is all I have in my cupboards. Thanks.

    • Jane's Patisserie on January 7, 2021 at 1:50 pm

      You can google how to turn the evaporated milk into condensed milk first, as they are not a straight swap x



  15. Vanessa on December 29, 2020 at 8:04 pm

    Hi, I haven’t got a paddle attachment for my electric hand whisk can I just use the whisk as it is to make the shortbread?
    Many thanks

    • Jane's Patisserie on December 30, 2020 at 11:50 am

      The whisk is problematic as it can get caught and isn’t designed for a biscuit dough really – if you have beaters though that should be okay. x



    • Vanessa on December 31, 2020 at 9:27 am

      5 stars
      Turned out a treat with using the beaters x



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