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A three-layer caramel sponge millionaires cake with chocolate buttercream frosting, gooey caramel, and mini shortbread bites! 

Millionaires bakes 

So I adore anything millionaires themed… how can I not?! Biscuit, caramel and chocolate are basically THE BEST COMBINATION in the world. Ever. Honestly, I love it! My millionaire’s cupcakes post has been so popular since I posted it, and I can see why.

I adore the secret caramel centre, with the naturally caramelly sponge using light brown soft sugar with 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!

The cake 

With this recipe, I did base it quite heavily on my millionaire’s 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. Unsalted butter, light brown soft sugar, eggs, self-raising flour and an optional bit of baking powder are the dream. 

  • Butter – For the sponges, you can use baking spread, margarine, or even room temperature block butter
  • Sugar – I use light brown soft sugar for the flavour, but dark brown soft sugar works well also. 
  • Eggs – I use medium eggs. It’s best to weigh them in their shells so you match 400g of dry ingredients, it can be 6-8 eggs. 
  • Flour – Self raising flour as always, guys!
  • Raising agents – I add a tiny bit of baking powder for this for a fluffier sponge, but this is optional. 

Buttercream

For the frosting, I then went with an easy chocolate buttercream using unsalted block butter (never use a spread for buttercream!), icing sugar and cocoa powder, but you can easily swap to using actual chocolate if you wanted instead. 

I tend to use cocoa powder because I simply use whatever I find easier sometimes (and whatever I have in the cupboard!) – whereas with melted chocolate it is another bowl to clean and something to remember to do – but if you do want this, I would recommend 200g dark chocolate, melted and cooled. 

If you are baking the cake in the middle of winter or cold weather you may need to add 1-3tbsp of boiling water to your buttercream to smooth it out slightly. This is a common thing and something I do often – however, if it is the middle of summer, the chances of needing to do this are slim as the ambient temperature of your kitchen will naturally soften the buttercream. 

 

Decoration

I decided to pipe the buttercream onto my cake using my all-time favourite 2d closed star piping tip, because I am in love with it. You can of course pipe the buttercream on however you like, or even just slather it on if you fancy – there is no shame in that. 

For the caramel I used a shop-bought caramel for ease, and don’t hate anyone for wanting to do that. Shop bought ingredients are there for a reason, and there is no issue in using them. If you want to make your own caramel sauce, you can try my homemade caramel sauce recipe! 

I love layering the naturally caramel flavoured sponges with buttercream and then plenty of caramel sauce – it drizzles out the sides of the sponges, looks AMAZING when you cut into the slices and is generally utterly irresistible. 

Yes, I did use shop bought mini-shortbread bites for the top – you can just use shortbread if you like, or even make some mini homemade shortbread bites with one of my many millionaires recipes but that is entirely up to you!! Enjoy! 

Two layer version

This recipe is a three-layer cake so I bake the sponges into three 8″/20cm round tins for best results – I get that it is quite an intensely tall cake if there aren’t many of you, but trust me it is worth doing. If you want to make a two-layer cake, however, I would use 250g butter, sugar and self-raising flour, 5 medium eggs and 1/2 tsp baking powder split between two tins, baked for 30 minutes. 

You would then want to have 2/3 of the decoration ingredients as well, but the method is the same as this recipe. 

Tips & Tricks

I went for a big three layer cake as I just love the look of them, and it certainly makes them a showstopper. 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!

A three-layer caramel sponge millionaires cake with chocolate buttercream frosting, gooey caramel, and mini shortbread bites! 
Print Pin Rate
Category: Dessert
Type: Cake
Keyword: Caramel
Prep Time: 15 minutes
Cook Time: 30 minutes
Decorating Time: 20 minutes
Total Time: 45 minutes
Servings: 15 People
Author: Jane's Patisserie

Ingredients

Cake Ingredients

  • 400 g unsalted butter
  • 400 g light brown sugar
  • 8 medium eggs
  • 400 g self raising flour
  • 1 tsp baking powder (optional)

Chocolate Buttercream Frosting

  • 350 g unsalted butter (room temp)
  • 650 g icing sugar
  • 75 g cocoa powder
  • 1-2 tbsp boiling water

Decoration

  • 350 g caramel (Carnations)
  • Shortbread bites
  • Sprinkles
  • Crushed shortbread

Instructions

For the Cake!

  • Heat the oven to 180ºc/160ºc 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 the flour, eggs and baking powder and beat again
  • Divide the mixture between the three tins and smooth it over – bake for 25-30 minutes until the cakes are golden and when the cake springs bac
  • 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.

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.
  • 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!

Notes

 

ENJOY!

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

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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.

84 Comments

  1. Holly on 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

  2. Sam on 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 on April 26, 2020 at 3:08 pm

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



  3. Niamh on January 21, 2020 at 5:58 pm

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

  4. Tammy on 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

  5. Amber on 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!

  6. Kelly on 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 🙂

    • Jane's Patisserie on March 31, 2019 at 7:56 pm

      Awh yay! I’m so glad!



    • Charlotte on November 6, 2022 at 9:04 am

      Did you use 300g of ingredients and 6 eggs or 250g and 5 eggs ? Both of these are stated for the 2 tier version and I dont know which to use



    • Millie on January 7, 2023 at 11:01 am

      In reply to Charlotte, what did you go with in the end? Having same issue, do I use 250 or 300 as like you said both mentioned. Thanks in advance



    • Jane's Patisserie on January 10, 2023 at 2:44 pm

      Hiya! Use the 250g recipe for a two layer version. Hope this helps! x



  7. Hayley Brimicombe on 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 on January 19, 2019 at 9:18 am

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



    • Hayley on 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



  8. Debbie Vandeventer on 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 on 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



  9. Yasmin on 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

  10. John Malcon on 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!
    John
    Weedit.photos

  11. Lily on 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?

  12. Clare Smith on 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

  13. Daniella Modern on July 30, 2017 at 9:39 am

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

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

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



  14. Natalie on July 25, 2017 at 8:59 pm

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

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

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



    • Jane's Patisserie on 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 on 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



  15. Jo on 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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