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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Never before even attempted shortbread or my own caramel but followed this recipe and WOW. My millionaires shortbread is lush and my friends are also loving their doorstep lock down treats! I would recommend watching the YouTube video also when making the caramel to see when you should remove from the heat, that came in very handy!!
To cut the millionaire shortbread is it best done when it’s been in the fridge or freezer for a couple of hours? I tried doing it without chilling and it got a bit messy with the caramel!
I always do it fridge cold – the caramel can take longer to set at room temp, but can still firm up so it may also be that the caramel wasn’t boiled enough xx
Thank you for your detailed recipe, I just have a question what type of chocolate is best to use for this recipe ?
As it’s just for topping, you can use basically any!
Just to help out a little, I used Cadbury Dairy Milk when I made mine and it came out amazing. Thinking about experimenting with caramac but that could be a bit of a caramel overload..
After making a disastrous batch of millionaires shortbread with my grandchildren I discovered your Pinterest pin. Wow! I made some on Saturday and we munched it during Strictly! It was perfect! Thank you Jane
After finding your pin I’m thinking of making some to give as presents for Christmas
But I’d like to get ahead, especially with four weeks of enforced isolation.
But! Can I freeze it? If not, how long would it keep?
Ahh that’s amazing!! So glad you liked it! And yes it can indeed freeze! x
Truly the best millionaire shortbread I’ve ever made!!
I am making this just now for my lovely health and social care workers as I retire tomorrow.
I am making the exact recipe substituting GF flour for 2 of us who are coeliac. I’ve made it before and it is the best M shortbread ever in my view so thanks a million!
To ring the changes I’ve added a little orange zest to the shortbread.
Fingers crossed will turn out as usual and I can treat my great co workers who I’m sad to leave but wish them health and resolve to get through the winter ahead…keep safe and sensible everyone! x
I am making this just now for my lovely health and social care workers as I retire tomorrow.
I am making the exact recipe substituting GF flour for 2 of us who are coeliac. I’ve made it before and it is the best M shortbread ever in my view so thanks a million!
To ring the changes I’ve added a little orange zest to the shortbread.
Fingers crossed will turn out as usual and I can treat my great co workers who I’m sad to leave but wish them health and resolve to get through the winter ahead…keep safe and sensible everyone! x
I tried Millionnaires Shortbread this morning and it is great!
After several earlier failed attemps, this recipe is fantastic and so well explained.
The caramel is really good!
I have one question though: I live in Belgium and of course use Belgian chocolate which is quite hard, much harder than British one; so I tried to put some cream in it to make it softer, but the chocolate curdled at first; is there any tips that can help?
Thank you!!
I think adding 1-2tbsp of vegetable oil or sunflower oil would be better!! And I’m so glad you liked the recipe! X
Hi I’m wondering if you’ve ever tried to freeze these? Did they freeze well? And if you did, did you defrost at room temp or in the fridge thank you x
Yes they freeze! And I generally defrost at room temp x
It makes my kids happy when I make such beautiful cakes for them and all this credit goes to you. Thank you so much for sharing these recipes as it has helped me make so many things in an easier way at home and my kids love them a lot.
Can you add flavouring to the caramel? If so, how much would you suggest without it effecting the caramel, I’d really like to add some peppermint into it E.g. 1/2 tsp or 1tsp of vanilla essence or peppermint essence?
Thanks!
I would say 1 tsp maximum – and only use a good quality flavour! x
I supply these to a cafe and they love them but was wondering the easiest way to increase for a snigger tin? Thanks 😊
It depends on the size of tin – as tins are based on volume it can differ completely depending on what tin you want to use x
Hi! How’s is best to know if the caramel is done. For the first time the other week and I think that it was overdone when set it was very chewy and not fudgey as it should be. I think it continued cooking after taken off the hob. Any advice? I’m making it tonight! Thanks xxx
Have a watch of my YouTube video as I show exactly how the caramel should look xx
That’s how I did it last time and it was really really hard. This time it is more the right consistency but slightly grainy. Hopefully I’ll nail it one day! X
Hi can you make the millionaires using gluten free flour ? X
It can sometimes make the shortbread feel softer when making it, but generally it does work yes! X
Hi, I am having a really difficult time with the caramel. Twice it have made it and twice it has ended up almost like a curdled consistency. Tried it low and slow and then fast and hot, same thing happened twice. Any idea what is happening?
You need to use a medium high heat, for 5-7 minutes as mentioned on the recipe. Low and slow isn’t right, neither is fast and hot. Watch the YouTube video for this, and you may see where you have gone wrong x
Caroline, if you are in the US, I just made this for the first time and got the curdled consistency too. I used confectioners sugar because I googled “caster sugar” and it says that it is confectioners sugar (which is actually icing sugar in the UK). What we actually need to use in the US is super-fine sugar. Hope this helps! I have not tried to remake it, but I think this was my issue after some research.