Reese's Pieces chocolate peanut butter cake

(60 ratings)

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Reese?s Pieces peanut butter cake


For the sponge:
  • 400g plain flour
  • 200g golden caster sugar
  • 150g light brown sugar
  • 1Ĺtsp baking powder
  • 1tsp bicarbonate of soda
  • 50g good quality cocoa powder
  • Ĺtsp salt
  • 300g melted butter
  • 1tbsp vanilla bean paste
  • 280ml water
  • 150g sour cream
  • 3 eggs

For the buttercream:

  • 250g unsalted butter
  • 250g smooth peanut butter
  • 2tsp vanilla bean paste
  • 400g icing sugar

For the ganache:

  • 200ml double cream
  • 130g dark chocolate
  • 2 packets of Reeseís Peanut butter cups

If you're fan of Reese's Pieces you're going to love this showstopping, jaw-dropping cake made with a rich chocolate sponge, peanut butter buttercream and glazed with a luxurious chocolate ganache.

The icing on the cake? Well, it has to be delicious Reese's Pieces scattered on top of the ganache, of course.

This cake is a peanut butter fan's dream come true and is really simple to make with our step-by-step picture recipe. This cake should take about 50 mins to cook and 30 mins to decorate (excluding cooling time)

We this cake would make an impressive cake for a birthday or special occasion - who could resist a slice? 


  • 3 x 8 inch sandwich cake pans
  • 2 x 8 inch cake cards
  • Spatula
  • Palette knife
  • Reusable baking paper
  • Non slip matting
  • Scissors
  • Sharp knife

Step 1

Preheat the oven to 180įC/350įF/Gas mark 4 and line your cake tins with greaseproof paper.

For the cake mix, whisk the eggs, vanilla and sour cream together. Sieve all the dry ingredients into a large bowl and beat in the melted butter and water. Add the egg mix bit by bit beating until you have a nice smooth mixture. Donít overbeat or the cake will be greasy. Divide the mixture between the 3 tins (about 540g in each pan) and bake in the oven for about 45-50 minutes, depending on your own oven. The cake will look ready when it has shrunk from the outside of the tins.

Cool the cake in the tins for 10 minutes before cooling completely on wire racks.


Step 2

For the buttercream, beat the butter and peanut butter together until light in colour and fluffy.

Sieve the icing sugar into the butter mix and push in with a spatula before beating. This will stop you getting an icing cloud and be a bit less messy. Beat for about 8 minutes until the buttercream is smooth and shiny.


Step 3

If you have one, use a turntable to ice the cake. Start with a non-slip mat, a large cake drum (just so you can pick it up and move it around), another piece of non-slip mat and then the 8 inch cake card. Add a layer of icing to the 8 inch cake card. If you do not have these, you can ice the cake on a plate or board. 

Layer the cakes with a generous layer of the peanut buttercream.

Give the outside of the cake one layer of buttercream and then pop in the fridge for 15 minutes to firm up.


Step 4

Cut a square of the reusable baking paper.

Remove the cake form the fridge and cover the top of the cake with the buttercream and then lay the baking paper over the top, smoothing any bubbles you can see and until the paper is nice and flat.

Using a clean palette knife to lift the cake, flip it over so the baking paper is now on the bottom of the cake and then give the cake another layer of buttercream. Donít worry about any lumps, bumps or holes they can be fixed when the cake has cooled again.


Step 5

While the cake is chilling, cut a few of the peanut buttercups in half.


Step 6

Remove the cake from the fridge and smooth any lumps or bumps with a hot palette knife, if you want a perfect finish. Dip it in boiling water and then wipe on kitchen towel before smoothing over the icing.


Step 7

For the ganache, chop the chocolate quite finely and heat the cream on a low heat until itís close to boiling point. Pour the cream over the chocolate and gently fold until itís smooth and shiny. Donít whisk the chocolate or you will get air bubbles.


Step 8

Pour the cooled ganache over the cake gently teasing some drip around the edge of the cake.


Step 9

Add the Reese's Pieces to the top of the cake before the ganache sets.

Your cake is now ready to serve.

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