Millionaires Cake!

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Three Layer Caramelly Sponges with Chocolate Buttercream Frosting, Gooey Caramel, and Mini Shortbread Bites make the BEST Millionaires Cake Ever!

So I adore anything Millionaires themed… how can I not?! Biscuit, caramel and chocolate is THE BEST COMBINATION. Ever. Honestly, I love it! My Millionaires Cupcakes post has been so popular since I posted it; I adore the secret caramel centre, with the naturally caramelly sponge and chocolate buttercream on top. The photos look so good on that post because they show the caramel oozing out so it never surprises me that they’re a hit!

My Salted Caramel Millionaires Shortbread has always been a massive hit as well because its a salty twist on the classic. I adore it! I love the salted caramel, which you can easily add to this recipe as well. You could simply add a tsp of salt to the tin of caramel, and it would be delicious!

With this recipe, I did base it quite heavily on my Millionaires Cupcakes as I adore it so much. I used the Light Brown Sugar recipe again as I just adore the flavour of the sponges, and it keeps it so moist and lovely. I then went with an easy Chocolate Buttercream frosting using Cocoa Power, but you can easily swap to using actual chocolate if you wanted instead.. I simply use whatever I find easier sometimes (and whatever I have in the cupboard!)

I went for a big three layer cake as I just love the look of them, and it certainly makes them a showstopper. However, if you want to make a smaller cake, then the details are in my Tips and Ideas section below. You can using whatever caramel you like, or even swap it to a caramel buttercream, but chocolate drizzled on it instead! But honestly, this is one of my favourite bakes in a long time and I hope you all love it too! Enjoy! x

Millionaires Cake!

Three Layer Caramelly Sponges with Chocolate Buttercream Frosting, Gooey Caramel, and Mini Shortbread Bites make the BEST Millionaires Cake Ever!
5 from 9 votes
Print Pin Rate
Category: Dessert
Type: Cake
Prep Time: 15 minutes
Cook Time: 30 minutes
Decorating Time: 20 minutes
Total Time: 45 minutes
Servings: 15 People
Author: Jane's Patisserie


Cake Ingredients

  • 400 g Unsalted Butter/Stork
  • 400 g Light Brown Sugar
  • 8 Medium Eggs
  • 400 g Self Raising Flour
  • 2 tsp Baking Powder

Chocolate Buttercream Frosting

  • 350 g Unsalted Butter (room temp)
  • 650 g Icing Sugar
  • 75 g Cocoa Powder
  • 1-2 tbsp Boiling Water


  • 350 g Caramel (carnations)
  • Shortbread Bites
  • Sprinkles
  • Crushed Shortbread


For the Cake!

  • Heat the oven to 180C/160C Fan and line three 20cm/8inch sandwich cake tins with baking parchment – leave to the side.
  • In a stand mixer, beat together the butter and light brown sugar for a few minutes until light and fluffy. Add in the flour, eggs, baking powder and beat again briefly till combined – try not to overbeat!
  • Divide the mixture between the three tins and smooth it over – bake for 25-30minutes until the cakes are golden and when the cake springs back (skewer should also come out clean)!
  • Once baked, leave the cakes to cool in their tins for 10 minutes or so, and then remove and leave to cool fully on a wire rack. If the cake has domed slightly, leave the cake to cool upside down to flatten it slightly so its easier to decorate later!

For the Decoration!

  • Beat the butter with an electric mixer for a couple of minutes to loosen it – Gradually add the icing sugar on a slow speed until it is combined then speed the mixer up and mix for 3-4 minutes until thoroughly combined and smooth.
  • Add the Cocoa Powder to the buttercream and continue mixing. If its really stiff, add in 1tbsp of Boiling Water at a time until you reach the desired texture.
  • When its summery I don’t usually need to add any, when its colder weather its usually 1-3tbsps! Keep on beating for 5 minutes until whipped and silky smooth!
  • On the first layer of the cake, pipe your buttercream using a 2D Closed Star Piping Tip, and then drizzle/spread some of the caramel on top. Repeat again with the next layer.
  • For the top layer, pipe on the rest of the buttercream, and add some little swirls. Drizzle over some more caramel. On top of each swirl, add a mini Millionaires Shortbread Bite, or a piece of Shortbread. 
  • Sprinkle on some crushed shortbread, some sprinkles, and ENJOY!


  • I love this style of cake as you can tell from the few I have made, and I happen to have 3 8″ tins, if you don’t have 3 tins you can make a smaller version of the cake, use 300g of everything in the cake mixture rather than 400g, 1.5tsps of baking powder, 6 medium eggs (and it might take an extra 5-10 minutes to bake) and use 2/3 of the decoration recipes!
  • I used Carnations Caramel which is like the condensed milk you can buy, but you can realistically use any caramel sauce you like or Dulce de Leche.
  • This cake will last in an airtight container for 3 days!



Find my other Cake, Chocolate & Caramel Recipes on my Recipes Page!

You can find me on:

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.

About Author

Hiya! I'm Jane, and I adore baking, cooking and all things delicious. I'm also partial to homewares, lifestyle posts and more!


  • Sian
    March 30, 2021 at 7:51 pm

    Hi Jane, I wondered how you pipped the icing in between each layer ? Was it like you would do a cupcake or did you just hold the bag upright and let the nozzle do the work? Also does the butter cream need to firm up in between each layer or can you do it all at once?

    Thank you so much for your help!

  • Sian
    March 28, 2021 at 9:58 am

    5 stars
    Hi Jane- how did you pipe the layers? Was it in circles like you’d pipe cupcakes or do you just push on the bag and lift up and let the tip do the work? Or another way? Thanks so much!

  • Carolann
    March 23, 2021 at 6:22 pm

    Hi Jane! I am wanting to make this recipe at the weekend for my anniversary, the only issue is that I only have one deep 8″ cake tin. Can I pour the whole recipe into this and just allow it to bake for longer then cut it into 3 layers?

    • Jane's Patisserie
      March 26, 2021 at 1:52 pm

      Hello! You can but I have no idea what the timings would be for this I am afraid x

  • Stephanie Dean
    February 21, 2021 at 10:22 am

    5 stars
    Hi I ordered some light brown sugar for this cake, but its been substituted for dark brown sugar. Is this OK to use? It was quite nice in the butterscotch cupcakes but not used in a big cake before. I will be doing the smaller 2 tin version. Thank you x

    • Jane's Patisserie
      February 21, 2021 at 1:41 pm

      Yes its totally fine to use! Just a slightly deep flavour! X

    • Stephanie Dean
      February 21, 2021 at 2:30 pm

      Thank you! X

  • Cristal
    February 10, 2021 at 9:29 pm

    Hi Jane,

    I’m just wondering what the measurement would be for a 4inch cake ? I want to make a smaller one for Valentine’s Day.

    Thank you,

    • Jane's Patisserie
      February 11, 2021 at 8:31 am

      I’ve not bake a 4″ cake before as it really is so tiny, but it would be about 1/3 of the recipe so the timings will be less x

  • Hannah
    January 17, 2021 at 8:43 am

    5 stars
    Hi Jane,

    Could this recipe be covered in a fondant icing for a birthday cake?


    • Jane's Patisserie
      January 17, 2021 at 11:42 am

      Yes it could – but I would recommend a decent crumb coat to seal all the crumbs in first!

  • Gemma Smart
    January 8, 2021 at 7:42 pm

    I don’t have a stand mixer! Would it make a big difference if I used an electric whisk when making the cake mix?
    Thank you

    • Jane's Patisserie
      January 9, 2021 at 3:52 pm

      No that would be fine, just try not to over mix it way too much x

  • Hannah
    December 21, 2020 at 10:50 am

    5 stars
    I made this cake last week for a birthday and it came out incredibly well! The sponge was perfect and the buttercream was delicious. I only used half the caramel but if I made it again I’d put more caramel between each layer! I ordered the icing nozzle that was recommended in the post and it was so easy to use! Even for a first timer like me! Perfect!

  • Hayley M
    November 15, 2020 at 11:33 am

    Hi, if i was to use 3 x 6 inch tins would the recipe be the same as the smaller recipe using 2 x 8 inch tins?

    • Jane's Patisserie
      November 15, 2020 at 11:36 am

      So for a 6″ version I usually say to use about 2/3 of a recipe – so you can use the smaller version if you want but I’m not 100% sure on timings!! x

  • Lauren
    September 9, 2020 at 9:10 am

    Hi, my son has picked this recipe for me to try for his birthday cake this year! I can’t wait to taste it myself as it looks amazing! However, on the day I need it I will be short of time, so am planning to bake the cake the day before and then decorate on the day. Would the butter cream be ok to pipe the next day if I made it the day before too? Just trying to save as much time as possible. Thank you x

    • Jane's Patisserie
      September 9, 2020 at 9:43 am

      You would need to re-mix the buttercream to freshen it up to be able to pipe it again – You could definitely do the sponges the day before, but personally (unless you don’t mind the re-mixing) would make the buttercream on the day! X

  • skye gordon
    September 3, 2020 at 9:39 am

    Looks amazing !! Thinking of making this. When you say ‘light brown sugar’ do you mean caster sugar?

    • Jane's Patisserie
      September 3, 2020 at 2:09 pm

      No, light brown sugar is a soft brown sugar. It’s not caster, muscavado or Demerara – it’s just light brown sugar x

  • aliyah
    August 30, 2020 at 2:46 pm

    Do we pipe all over the cake with the buttercream.

  • Jo
    August 17, 2020 at 8:48 pm

    5 stars
    Hi Jane,
    Another fantastic creation! Can I ask why the addition of baking powder to this cake recipe? Normally you make your sponge without.

    • Jane's Patisserie
      August 18, 2020 at 9:23 am

      I have several recipes with baking powder, not just this one – and I find it just lightens the texture! You can leave it out if you want x

  • Hermione
    August 16, 2020 at 8:44 pm

    Did you melt the caramel and then drizzle it?

    • Jane's Patisserie
      August 17, 2020 at 8:13 pm

      I don’t melt it, no. I just mix it a little in a bowl or the tin and then drizzle x

    • Dawn brown
      October 9, 2020 at 7:36 pm

      Hi Jane.
      I made this cake for my son for his birthday. The sponges came out lovely, but the butter cream so was thick. I did everything precisely as per recipe, but it was that thick I couldn’t pipe it! In the end after a couple of attempts at re mixing it, I gave up and just had to smooth it onto the sponges, which spoilt the affect. Help….what did I do wrong?

    • Jane's Patisserie
      October 10, 2020 at 8:21 am

      You just need to add a little boiling water or whole milk to thin a buttercream out if it’s too thick xx

  • Chantelle
    July 20, 2020 at 5:28 pm

    Hi jane,

    I’d like to make this cake in 6” tins for my mums anniversary. How would I adapt the recipe please!?

    • Jane's Patisserie
      July 20, 2020 at 7:14 pm

      You use about 2/3 of the recipe, and follow the method, but baking time is shorter x

    • Steph
      August 17, 2020 at 10:02 pm

      This looks insanely good !! In your notes where you talk about adapting the recipie to make a smaller version, how many tins was that in reference to w.g. was it for 2 x 8 inch tins ?

    • Jane's Patisserie
      August 18, 2020 at 9:22 am

      Yes, two 8″ xx

  • Liza
    May 18, 2020 at 10:35 am

    I made this cake yesterday but two layered and it came out amazing. Made this for my family and they have said it tastes so amazing and the cake itself was really soft! Can’t wait to bake some more cakes from your page! Xx

  • Holly
    May 3, 2020 at 8:01 pm

    5 stars
    I made this epic millionaire cake for my birthday last year and it was fab! Easy recipe to follow, looked and tasted incredible. Thank you for sharing it, Holly x

  • Sam
    April 26, 2020 at 3:00 pm

    5 stars
    Hello! I’ve made this recipe before and loved it but wanted to make it again with chocolate sponge? How much flour would you need to swap out to coco powder/ would it work? Thanks

    • Jane's Patisserie
      April 26, 2020 at 3:08 pm

      I would swap out 50g of flour for cocoa powder! x

  • Niamh
    January 21, 2020 at 5:58 pm

    What size tin for the smaller recipe, please?? Love your recipes 😊😊

  • Tammy
    January 21, 2020 at 11:37 am

    This looks amazing how much ingredients would I need to use 3 6” round cakes instead of 8” ? Thankyou in advance x

  • Amber
    August 15, 2019 at 5:45 pm

    5 stars
    I have just made this cake and Its amazing! So so easy but yet looks so spectacular! Thank you for sharing!

  • Kelly
    March 31, 2019 at 1:20 pm

    Made the 2 tier version of this cake for
    Mother’s Day and it’s amazing. Thanks for much for the recipe – have some very happy (and full) family 🙂

  • Hayley Brimicombe
    January 18, 2019 at 4:34 pm

    I’m wanting to make this for a cousins birthday but she would like 2 layers instead of 3. How much would I need to change the amounts to, for this? Looks amazing and I can’t wait to make it!

    • Jane's Patisserie
      January 19, 2019 at 9:18 am

      There’s notes on how to do this in the notes section of the recipe xx

    • Hayley
      January 26, 2019 at 8:10 pm

      Thank you. Am in the middle of making it now and can’t wait for my cousin to see it and hope she’s like it xx

  • Debbie Vandeventer
    September 25, 2018 at 6:43 pm

    5 stars
    I live in the US and I am wondering what the difference is between the flour in the UK and our flour. I believe that our “self RISING flour” is different than your “self RAISING flour”. Would you happen to know what I need to use in place of, or in addition to, our regular all-purpose flour to achieve the right texture for this cake? I love your creations and I cannot wait to make this cake!!

    • Jane's Patisserie
      September 25, 2018 at 7:42 pm

      I believe your all-purpose flour is the same as our plain-flour. For this cake, I would add in probably 3tsp more baking powder. x

  • Yasmin
    March 3, 2018 at 3:28 pm

    Wow I can’t wait to bake this cake for my sons birthday! Thank you for all your amaaazing recipes

  • John Malcon
    December 7, 2017 at 12:07 pm

    Hello, Jane!
    Thank you for the perfect recipe! I sent to my wife a link on your blog!

  • Lily
    November 28, 2017 at 3:20 pm

    I have 372g of the brown sugar would it be ok to do the last 28g’s as dark brown sugar?

  • Clare Smith
    August 16, 2017 at 10:37 pm

    Just made this cake for my birthday. Substituted Gluten Free Flour for the unusual but rest of recipe remained the same.
    Its turned out wonderfully, im sure any visitors will enjoy the luxurious treat. Thanks for your recipes and ideas they are spot on

  • Daniella Modern
    July 30, 2017 at 9:39 am

    Looks divine. Do you weigh the eggs in their shells or not? Cheers

    • Jane's Patisserie
      July 30, 2017 at 6:18 pm

      I personally weigh them out of the shells but it doesn’t reeeeally matter. ?

  • Natalie
    July 25, 2017 at 8:59 pm

    An this be made in a 8″ 3″ deep tin? X

    • Jane's Patisserie
      July 25, 2017 at 9:38 pm

      Yes – the cakes won’t be that deep so they’d be fine.

    • Jane's Patisserie
      July 25, 2017 at 9:39 pm

      Sorry I missread that ? did you mean one tin? It should be fine but I’d lower the baking temperature to 140C and bake for a long time.

    • Natalie
      July 26, 2017 at 6:11 am

      Thank you yes I meant one tin.
      I was looking for a very chocolatey chocolate cake for a few weeks time this will be perfect x

  • Jo
    July 25, 2017 at 2:23 pm

    Oh.My.Goodness. This is STUNNING! Seriously, I don’t even know where to begin. I’m definitely bookmarking this to try out sometime, thanks 🙂


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