Save room this Easter to make this cracking s'mores cake


Once you make this American-style, burnt marshmallow cracker classic, it will only leave you wanting s'more - and it's super simple to make

60 min
medium
S’mores cake© Matthew Hague
By Edd Kimber
April 3, 2026
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A nostalgic classic of graham crackers (or digestives for my fellow Brits), marshmallow and chocolate, s'mores are pure campfire comfort and a toasty, almost smoky, treat.

Getting that flavour into a cake isn't hard but it does involves fire, well, a blowtorch at least. The meringue used to make the buttercream is blowtorched multiple times before the butter is added, giving the finished buttercream that burnt marshmallow flavour, a technique I learned from Kassie Mendieta, a fellow baker in the US.

Edd Kimber was the first ever winner of The Great British Bake Off© Matthew Hague
Edd Kimber was the first ever winner of The Great British Bake Off

This recipe is from Edd Kimber's Chocolate Baking, published by Quadrilles, £18, photography copyright Matthew Hague

Ingredients

For the wholemeal brown butter cake
  • 225 g of unsalted butter, diced
  • 265 g of caster sugar
  • 150 g of plain flour
  • 150 g of wholemeal or plain flour
  • 2¼ teaspoons baking powder
  • ½ teaspoon bicarbonate of soda
  • ½ teaspoon fine sea salt
  • 3 large eggs
  • 120 ml of buttermilk
  • 1 tsp of vanilla extract
For the brown butter milk chocolate ganache
  • 125 g of unsalted butter, diced
  • 300 g of milk chocolate, finely chopped
  • 300 ml of whipping cream
  • A pinch of flaked sea salt
For the burnt swiss meringue buttercream
  • 2 large egg whites
  • 150 g of caster sugar
  • Large pinch fine sea salt
  • 240 g of unsalted butter
  • 1 teaspoon vanilla bean paste

Method

For the ganache

1. Add the butter to a small saucepan, place it over a medium heat and cook until browned. The butter will first bubble and splatter as the water cooks out. Once the noise reduces and the butter starts to foam, watch for the milk solids to become separated out, little brown flecks, as this is when the butter has browned.

2. Pour into a small heatproof bowl and refrigerate until thick and spreadable but not fully solid, 30–60 minutes.

3. To make the ganache, put the chocolate in a heatproof bowl and melt. Place the cream and salt in a small saucepan, bring to a simmer, then pour a third over the chocolate and stir to combine.

4. Mix in the remaining cream, in two additions, stirring until a smooth and glossy ganache is formed, then add the browned butter and stir until thoroughly combined.

5. Finish with a short blend using a stick blender, to ensure the ganache is thoroughly emulsified. Cover and set aside, at room temperature, for 2–3 hours or until thick and spreadable.

For the cake

1. Preheat the oven to 180°C/160°C fan. Lightly grease two 20cm round cake tins and line each base with a disc of baking parchment.

2. To make the cake, put the butter in a saucepan, place over a medium heat and cook until browned, following the instructions above, then pour into a large mixing bowl and add the sugar, whisking to combine. Set aside to cool for 10 minutes.

3. Sift the flours, baking powder, bicarbonate of soda and salt into a large bowl and whisk to combine.

4. Add the eggs, one at a time, to the butter mixture, whisking until fully combined before adding the next.

5. Pour in the buttermilk and vanilla and whisk to combine. Add the dry ingredients and whisk briefly, just until a smooth batter is formed.

6. Divide the batter equally between the two tins, then bake in the preheated oven for about 25 minutes or until the cakes are pulling away from the sides of the tins and they spring back to a light touch. Allow them to cool in the tins for 10 minutes before turning out onto a wire rack to cool completely.

7. Use a serrated knife to slice each cake horizontally into two even layers. Place the first layer of cake onto a cake stand and top with a third of the ganache, spreading it in an even layer all the way to the edges. Repeat this layering twice more. Finish by placing the last layer of cake on top. set aside whilst you make the buttercream.

Making the buttercream

8. Whisk the egg whites, sugar and salt to a large heatproof bowl and place over a pan of simmering water. Gently whisk just until the mixture is hot to the touch and you can no longer feel any grains of sugar.

9. Remove the bowl from the heat and transfer to the bowl of a stand mixer. Whisk the meringue for 3–4 minutes until it begins to hold stiff peaks but is still very warm. stop the mixer and lift the whisk from the bowl.

10. Use a blowtorch to caramelise the surface of the meringue, making it nice and toasty, as you would with a marshmallow over a fire. Make sure to blowtorch the meringue attached to the whisk as well.

11. Whisk the meringue for a further 30 seconds before repeating the process. Do this blowtorching at least 5–6 times until the meringue has taken on a warm caramel tone.

12. Whisk the meringue for a few minutes more until it is no longer hot. Turn the mixer to medium speed and slowly incorporate the butter, a few pieces at a time.

13. Once all the butter has been added, add the vanilla and continue mixing until a buttercream texture is formed. switch to the paddle attachment, turn the speed to low and mix until the buttercream is super silky and devoid of any air bubbles.

14. Spread the buttercream over the tops and sides of the cake, decorating as you please. Kept covered, the cake will keep for up to three days.


Tip: If the buttercream is too loose after adding the butter it will be because the meringue was too hot and needed to be whisked a little longer. 

If this happens, place the bowl in the refrigerator for 15 minutes, then re-whisk until thick and creamy. If the buttercream separates after the butter is added, the butter was likely too cold, but if you continue whisking it will eventually become smooth and creamy.

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