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!
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J x
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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.
Hi Jane , Made so many of your cakes ,cookies etc and they all come out good and so delicious.
As was this Millionaire Shortbread , however the caramel even though it had been in the fridge for an hour and a half was quite soft , and when I cut the chocolate it cracked and was sliding off .
However it was still delicious and only my first attempt and will most definitely be trying again .
Mel x x
If it stays soft, that means it hasn’t been boiled for long enough or a high enough heat so will stay soft. Next time, just make sure to do it for longer!! x
First time I’ve tried making this. It was brilliant. Best ever recipe
Fantastic recipe, I’ve found caramel pretty tricky in the past but these detailed instructions enabled me to get it just right. Thanks so much Jane 😀
I have been working my way through your recipes since the beginning of lockdown, made these today and they are definitely our new favourite! After reading your blog and the comments I was worried about messing up the caramel (I’m new to baking and have an electric hob!) but by keeping the temperature a bit lower, I managed it successfully without burning. First time I’ve ever made millionaires shortbread but won’t be the last…my 12 year old son had asked for more already!!
Thank you for all your lovely recipes, so easy to follow even for a novice like me!
I love this recipe the first time. My caramel is starting to come out with bits I’m not to sure why. I follow the recipe and use same ingredients. I do have an electric hop it wither that or the pan I use. I use the right spatula and not a wooden one. Any ideas.
Hey! So that means it’s burning/catching and it could be either the hob or pots – in the past I struggled with electric as I found it burnt very easily in comparison to a gas hob, but also if your pot is thing that can cause a problem – so likely the best thing to do would be to have a lower heat x
Hi, I’m having trouble with the chocolate part. If I put it in the fridge it gets a white bloom and if I leave it out it sets with what looks like little spots (maybe fatty spots). What chocolate is best?
That’s usually down to how it’s melted – it happens because of temperature. Try and melt the chocolate in a different method and see if that helps!
This was fantastic! It was relatively easy to make and made quite an impression as they look stunning. I failed at making the caramel the first 2 times and could not figure out what I was doing wrong. The third time I made it at my boyfriend’s and it turned out perfect! I’m wondering if it might have been my electric stove or teflon pot that made the difference because my boyfriend has a much nicer gas stove and ceramic lined pots. Anyway, I love how it wasn’t overly sweet at all and I got rave reviews from everyone. I will definitely be checking out more of your recipes because I feel like American desserts can be just too sweet.
Hey! So yes it could definitely be the stove or pots – as mentioned on the post I struggled with electric as it just doesn’t work the same compared to gas, but then again if your pot was too thin or something that can also cause issues!! So glad it worked in the end and you enjoyed it! x