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Chocolate sheet cake

By katie1986 (GoodFood Community)
  • Preparation and cooking time
    • Total time
  • Easy
  • Serves 20
Baking for a crowd is easy with this fluffy,yummy sponge cake.Its baked in a large roasting tin and makes 20 pieces.


  • 4 eggs, seperated
  • 275g (10oz) self-raising flour
  • 4 tbsp of cocoa powder
  • 225 (8oz) soft-tub margerine
  • 225(8oz) caster sugar
  • 6 tbsp semi skimmed milk

For the icing:

  • 150g (5oz) plain or milk chocolate, broken into squares
  • 350g (12oz) icing sugar
  • 1 tsp veg oil


  • STEP 1
    Preheat oven to 180c/350f/gas 4. Grease a 30 by 20 roasting tin.Line the base and sides with non-stick baking paper.
  • STEP 2
    Whisk egg whites until stiff peaks form. Sift the flour and cocoa into a seperate bowl. Add egg yolks,marg,caster sugar and milk. Beat with a electric whisk or wooden spoon for 2 mins, until smooth.
  • STEP 3
    Fold in the egg whites.Spoon the mixture into the tin. Bake for 35-40 mins, or until firm in the centre.Cool completely in the tin.
  • STEP 4
    For the icing, put the chocolate and 5 tbsp of water into a pan and heat gently until melted. Beat in the icing sugar and oil until smooth.
  • STEP 5
    Turn out cake and spread the icing on top with a palette knife. Cut into squares and enjoy!

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