Chocolate smash cake

(4 ratings)
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  • Serves: 12

  • Costs: Mid-price

  • Skill level: Bit of effort

  • Make in advance

This chocolate smash cake is really fun and perfect for a birthday party - whether it's for kids or grown-ups, it'll be an instant hit! You can bring this cake out with a mini hammer so you've got the novelty of cracking it open and you'll find loads of sweets spill out! It's the ultimate treat really - a bit like a piñata, but in the form of a cake! This cake is a bit of a long process to make, but it really is worth the extra time and effort you put in as you can't really buy smash cakes in the shops. Plus, you can fill it with your kids' favourite sweets, which will make for even more of a treat! Give it a go, and happy smashing!


For the cake:

  • 100ml whole milk
  • 225g golden caster sugar
  • 225g unsalted butter, at room temperature
  • 2tsp baking powder
  • 225g plain flour, sifted
  • 4 medium eggs
  • 1tsp vanilla extract
For the dome:

  • 280g white chocolate, finely chopped
  • 2tsp coloured sprinkles
To decorate:

  • 460g chilled Philadelphia cream cheese
  • 150g Lotus Biscoff Spread (you can buy this in Sainsbury’s) or use 5g butter with 1tsp vanilla extract and a pinch of cinnamon or peanut butter
  • 300g icing sugar, sifted
  • 120g white chocolate buttons, giant and regular
  • 2 handfuls of sweets, to half-fill the dome
You will need:

  • 2x18cm sandwich tins
  • A bowl with a rounded base


  1. Heat the oven to 150C fan, gas 3½. Grease and line the base and sides of the sandwich tins. Put all the cake ingredients and a pinch of salt in a bowl and mix with an electric whisk until smooth. Divide between the tins, smooth the top and bake in the middle of the oven for 30-40 mins.

  2. For the dome, set the bowl on a baking tray, flat edge down. Smooth 2 sheets of clingfilm over the top. Next, melt the chocolate in a heatproof bowl set over gently simmering water, then mix until smooth.

  3. Pour the chocolate evenly over the clingfilmed dome, then add some sprinkles. Leave it to set, then trim the edge with a dry, hot knife and chill until ready to serve – it must stay in the fridge until ready to smash to get the snap.

  4. To decorate, beat half the cream cheese with the Biscoff spread, then add the rest of the cream cheese and the icing sugar, and mix until smooth. Spread about ¼ of the Biscoff mixture on top of one of the cakes, then top with the other sponge and spread over the remaining mixture. Decorate the sides with chocolate buttons, add the sweets on top, then set the dome on top
– and get smashing!

Nutritional information per portion

  • Low
  • Med
  • High
  • Calories 775(kcal)
  • Fat 42.0g
  • Saturates 24.0g

This nutritional information is only a guide and is based on 2,000 calories per day. For more information on eating a healthy diet, please visit the Food Standards Agency website.

Guideline Daily Amount for 2,000 calories per day are: 70g fat, 20g saturated fat, 90g sugar, 6g salt.

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