Millionaires Shortbread – Back to Basics!
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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!
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
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Hi Jane, I love this recipe 😊 would it be possible to add freeze dried raspberries to the shortbread mix? If so how much would you recommend?
Hiya, yes of course – yum! Id recommend adding 10-15g. Enjoy! x
I’ve made this today and it’s a hit. However, on some of the cuts, the chocolate is coming away from the caramel. It’s almost falling off. What could I have done to cause this?
Hi Jane.
Attempting to make this for the first time so thanks for all the tips.
I have cooked my shortbread (made in an electric mixer) for 30 minutes in the end, but it looks a bit spongey, not shortbready! What have I done? Could it be because I used stork rather than butter? It made a good dough, just looks a bit springy. I’m making this again next week for a competition at work so all tips appreciated!
On the upside my first time making caramel was a success! Xx
Hiya! It may be slightly overbaked – try making by hand next time to see this makes a difference! Hope this helps! x
Made this today, think I overdid the caramel but carried on and made it anyway but left it out of the fridge to set. Poured on the chocolate then made the mistake of setting in the fridge. Now the caramel is so hard I can’t cut it! Its been out of the fridge for a few hours now and still not softened 😭 not sure what to do! Any suggestions or have I completely ruined it?
Hi Jane, this shortbread is amazing. I make it often to give to all of my carers and everybody loves it. Thanks
This recipe was so so so good! The caramel was Devine The only change I made was to add cornflour into the shortbread base. I make shortbread all the time and this little trick keeps it crumbly and i think a better texture.
Yes re cornnflour
hi, how much cornflour would you add?
Hi just wondering could I use baking spread for the shortbread or does it have to be block butter
I would personally say butter!
Hi Jane,
Amazing recipe, but I’m having trouble with the chocolate when cutting it.
If I put it in the fridge, the chocolate blooms then cracks when I cut it.
If I set it all at room temp it still cracks when I cut it.
What am I doing wrong?
It never has a clean finish 😬
Have you tried warming the knife in hot water before cutting it? Also, maybe when slightly softened but still hardening you could try making lines in the chocolate so it cuts more equally?
I used to have this problem before I used a bigger knife! Bigger the knife the better. Make sure it overlaps both sides of the shortbread then literally straight down. I sat mine out of the fridge for an hour then cut it x x
Absolutely fantastic. Wishing I had read everything first so caramel didn’t catch but so delicious. I used Cadbury milk chocolate for the topping which was yummy. Will definitely make this again!
I wonder if it would help to temper the chocolate? I just keep back about 1/3rd of the chocolate when I’m melting it, chop it finely and then when the rest has melted, take it off the heat and stir it in. I did that last
night when I made this and it cut beautifully. Probably better not to put it in the fridge, I’d have thought, as that would definitely make it crack.
Hi can these be frozen please?
Hi, yes it can be frozen and stored for up to three months!
Hi, can these be frozen once baked please?
Another wonderful recipe, Jane, thank you so much! Everything I make from your website comes out perfectly and the feedback from friends and family is always great.
Can you use lighter evaporated milk?
NO, definitely not!! You MUST use condensed milk as listed! x
Hi. I made this yesterday and it came out so well. I did cook my caramel for 1 minute 30 longer as a previous recipe I used said 10mins. This made it more like a fudge but it was absolutely delicious.
I was just wondering though, can the butter be substituted for stork?
I tried a substitute once and it didn’t work as well, the caramel didn’t seem to look as good as when you use on salted butter
Hi Jane love your recipes. Just wondering I only have a 8 inch square tin will the recipe be ok to make or will I have to adjust the baking time slightly and amount of ingredients?
Hi I’ve made this recipe many times but today th caramel thickened nicely but when I took it off the heat the butter was floating on top what have I done wrong. Help me please. becky
Hiya! This sounds like your temperature was slightly too hot and your caramel was on the heat for too long! Hope this helps! x
I put the shortbread/caramel in the fridge overnight and the caramel is soft what can I do?
Nothing now that it’s made – next time, it means you need to boil the caramel for longer if all the correct ingredients are used!
Hi Jane, just made this today & it was so lovely! But I was just wondering why my caramel is so pale? In your pics it’s a lovely …well, caramel colour?! Am I not cooking it long enough? And big congrats by the way for being No.1 Sunday times bestseller, so well deserved! : D
Ah yay! It may just be the lighting in the kitchen, or the pan you use, temperature etc… but as long as it set well the colour doesn’t matter!
Why am I catching my caramel every time. I have even bought your pans and spatulas and it’s still catching. I stir continuously x
Maybe the heat is a bit too high?