Malteser Millionaires Shortbread!
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Malt biscuit base, homemade caramel filling, and chocolate with Maltesers. The BEST Malteser millionaires shortbread!
Millionaires shortbread
So… millionaires shortbread is one of my most favourite things on the planet. I adore it. I have several recipes on here now that always come up trumps when I post them such as my Terry’s chocolate orange millionaires shortbread and my salted caramel millionaires shortbread, but this time I wanted something that felt extra nostalgic and indulgent. When so many of you started asking for a Malteser-packed version, I knew it was a sign to finally bring this idea to life.
This bake is everything you want from a traybake: sweet, crunchy, slightly chewy, and irresistibly chocolatey. What makes it truly special is how each layer contributes something different, yet everything blends beautifully into one glorious bite. If you’re a Malteser fan like me, this might just become your new obsession.
I should confess… this one is slightly different to my others, because its not actually got a shortbread base but either way the mix of malt, caramel and chocolate is dangerously tempting, and it took all my willpower not to slice into it early. But trust me when I say the wait is worth it, and the finished bars are nothing short of heavenly.
The malt biscuit base
Instead of classic shortbread, I went for a malt biscuit base, mainly because it amplifies the Malteser flavour in the best possible way. Using crushed malted milk biscuits allows you to get that signature malty warmth while keeping the no-bake base beautifully simple. The melted butter binds everything together to form a solid, crisp and utterly delicious foundation for the caramel topping. It’s a base kind of like my No-Bake Chocolate Malteser Cheesecake, but with more to suit the size of tin.
A 9-inch square tin does require a surprisingly large quantity of biscuits, but it ensures the base is thick enough to hold the weight of the caramel and chocolate. The result is a biscuit layer that feels substantial without being too hard or crumbly. Using supermarket malted biscuits also keeps this recipe budget-friendly, which is always a win.
You can absolutely swap back to classic shortbread if you’re loyal to the traditional version, but the malty twist elevates this bake into something special. It balances sweetness, adds flavour, and turns the whole traybake into a Malteser-lover’s dream. Once you try it, I think you’ll understand exactly why I chose it.
Making the caramel
The caramel I have used is the same as the others I have used, as I didn’t think it would be a good idea to make that Malteser like. Things like the caramel in my Terry’s Chocolate Orange Millionaires Shortbread post, the same as this one, shouldn’t be messed with as they work so well. You do have to concentrate when making it, but its worth it. I use a non-stick pan, and its a dream.
Pour the ingredients in, and melt slow enough that the butter melts, and then when all the ingredients are runny, you can turn the heat up and start to let it boil. You have to let it boil, on quite a high boil (but only on a medium heat) and then stir it whilst its boiling. Over the 5-7 minutes, you will see it darken slowly, and it’ll get thicker, but its worth the patience and care.
If you over do the caramel slightly, it’ll be chewy. If its solid, you’ve gone waaaay over, but thats quite hard to do. If it is quite chewy, you just need to keep the traybake at room temperature so that the butter doesn’t make the caramel any harder.
Malteser topping
The top layer brings everything together with thick, luxurious chocolate and plenty of crushed and whole Maltesers. You can use use dark chocolate or milk chocolate depending on your preference, but milk chocolate gives the most authentic Malteser flavour. Once the melted chocolate hits the cooled caramel, adding Maltesers on top creates that iconic crunchy texture.
If you’re lucky enough to find Malteser spread, you can blend it with melted chocolate for an even richer malty topping. It softens beautifully and spreads like a dream, creating a silky top layer that sets firmly but still cuts neatly. If you can’t find the spread, you can add malt powder such as Horlicks to melted chocolate for the same effect.
Pressing extra Maltesers into the warm chocolate not only makes the topping look gorgeous but also adds the perfect crunch. A mix of whole and crushed pieces gives every slice a different texture, and that element of surprise keeps each bite fun. This part is easily customisable, so feel free to be as generous as your heart desires.
Bringing everything together
Once all three layers are assembled, the traybake needs a good chill to set fully before slicing. Letting the biscuit base, caramel and chocolate cool slowly helps prevent cracking and keeps the textures perfect. If the chocolate layer is refrigerated too quickly, it can harden unevenly, so letting it rest at room temperature for a while can make slicing neater.
When the traybake is ready, a sharp knife dipped in hot water between cuts will give you beautifully clean squares. This trick is especially helpful with deeper tray bakes or anything containing caramel. Each slice will show off those dreamy layers, malt biscuit, golden caramel and chocolate Malteser topping.
Serving this bake is effortless, and it’s guaranteed to disappear quickly at any gathering. Whether you cut generous chunky squares or smaller elegant bars, these treats are perfect for parties, picnics, gifting, or simply a quiet moment with a cup of tea. They store incredibly well, so you can also enjoy them throughout the week.
Tips and tricks
- This recipe lasts for 7+ days, in the fridge or room temperature
- This recipe will freeze for 3+ months
- **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!
- The Malteser spread is found in most supermarket these days, but you can use one or two jars. They are 200g each, and I would use two jars to make it a nice thick layer, but one will work.
- You can use fewer biscuits if you don’t want it as thick. Use 400g, with 175g of butter.
- I use this 9″ square tin in this recipe.
Malteser Millionaires Shortbread!
Ingredients
Biscuit Base
- 600 g malted milk biscuits
- 250 g unsalted butter
Homemade Caramel
- 200 g unsalted butter
- 3 tbsp caster sugar
- 4 tbsp golden syrup
- 397 g condensed milk (one tin)
Chocolate Malteser Layer
- 300 g milk/dark chocolate
- 100-200 g Maltesers
Instructions
For the Biscuit 'Shortbread' Base!
- Blitz the biscuits in a food processor to a small crumb, and add the melted butter – either pulse in the food processor a few times until the mixture is combined, or mix it in a bowl.
- Tip the biscuits into a lined 9x9" square tin and press down firmly.
For the Caramel!
- In a large saucepan pour the condensed milk, butter, sugar, and golden syrup and melt on a medium heat till 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 biscuit base and leave to set for one-two hours on the side. If its hot, set in the fridge!
For the Chocolate Malteser Layer!
- Melt the chocolate down carefully in the microwave, or in a bain marie.
- Spread on top of the caramel. Sprinkle over some Maltesers, and crush a few for an affect, and then set on the side or in the fridge.
- Once set, cut up your pieces and enjoy!
Notes
- This recipe lasts for 7+ days, in the fridge or room temperature
- This recipe will freeze for 3+ months
- **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!
- The Malteser spread is found in most supermarket these days, but you can use one or two jars. They are 200g each, and I would use two jars to make it a nice thick layer, but one will work.
- You can use fewer biscuits if you don't want it as thick. Use 400g, with 175g of butter.
- I use this 9" square tin in this recipe.
I’m so confused.. I was mixing up the caramel, and it appears to have split! 🤭 that’s a first for me as it happened so quickly.. would it have got too hot do you think? Maybe it was ready much sooner than I thought and I over did it 🤔. Going to redo the caramel tomorrow 🙂
Most likely it was too hot, yes. It’s a hard thing to say about what temp it should be, but if you do try it again, try it lower by quite a bit, and just be prepared it might take a bit longer. Also try to use actual butter rather than a spread (if you did) xx
I made these for a bake sale and omg they are amazing! I bought enough for 2 batches but just made 1 in the end, have you tried freezing? X
I haven’t personally put these in the freezer, but I know plenty of cafes and such that freeze millionaires shortbread so i don’t see why it won’t work! xx
Hi. I have an 8×8 tin….that’ll work the same right?
Thanks
Emma
It’ll be quite a lot deeper so you’ll probably only want to use 400g of biscuits and 175g of butter x
Hi Jane, I can’t get malteser biscuits over here. Can I use digestive biscuits or biscoff biscuits instead?
Yes you can use either!
I made these twice last year, turned out really well! Couldn’t find Malteser Spread for ages until recently and decided to make them again. Three times I tried to make the caramel and it split every time! I was even using the same non-stick saucepan as last time. On my third and final attempt I kept the gas really low and got past the 7 minute mark without it splitting but it wasn’t thickening or browning either. I gradually eased up the temperature but it split again….. So frustrating, particularly since it worked for me before. Used Carnation condensed milk for first two attempts and Tesco condensed milk for the third. I’ve double checked the ingredient proportions and noticed that I was only adding 3 tablespoons of golden syrup, not 4, but I can’t imagine that made the mixture split?
Hi Jane, I can’t get malted biscuits over here. Do you have an alternative, digestive cookies or speculoos cookies?
I am not very good at making cakes, Just made the shortbread I am so pleased it turned out just right. Thank you for the lovely recipe. The question is what do I do next.
We tried it today! It’s delicious!!
Is it really 250g of butter in the base? It seems an awful lot.
For 600g of biscuits, 250g is correct. If you don’t use enough, the biscuits won’t bind.
Hi Jane, I just want you to know I am working my way through your recipes. Up to now everything I have made has turned out amazing. I am now making Cheesecakes for family and friends instead of birthday cakes they love them!! Crunchie and snicker are firm favourites at the minute still lots to try. I am going to make this Malteser shortbread at the weekend. Thank you for sharing your recipes I love your site. I am inspired to full fill my dream of owning a coffee shop one day serving all your delicious recipes
It looks yummy and not that over complicated and I can get my kids involved with it. Can’t wait to try it.
I hope you all love it!
The calories… is that for one square??
Yes. But its the average for its cake serving size. If you want less, cut the pieces smaller as its based on 16 pieces.
Hello! I live in Australia and I cannot find malteaser spread do you know an alternative?
It is something you can just leave out – use melted chocolate on top, and add Maltesers on top of the melted chocolate.
I made these but used chocolate coated malt biscuits for the base and oh my god 😍
Yummmm!
Do you think tinned caramel would work? I’m terrible at making caramel 🙁
Hiya! Unfortunately it won’t work. Tinned caramel doesn’t set in any way, so it’ll be a sloppy mess. The best bet is to have a go! It’ll still be more set than the tinned kind! Also, can I ask why you voted 4/5 stars? I’m always striving to improve my posts! X
I’m not sure if I can get the malted biscuits so do you think I could add malt powder to my shortbread recipe? I can’t wait to make these! It’s a brilliant idea!!💝💝
I’ve never tried it but I don’t see why not! Probably add about 100g worth?
My caramel is quite light looking will it taste ok?
How did it turn out? Sometimes colour can vary but it will set/taste the same x