Chocolate traybake

Chocolate traybake


1 person made this

About this recipe: A moist and delicious chocolate cake made in a Swiss roll tin, covered with chocolate icing and walnuts. My children always chose it for their birthday cake over any other and it makes enough for a big crowd. Moist and delicious and very easy to make. Enjoy!

Carolyn Herbert

Serves: 35 

  • For the cake
  • 250g plain flour
  • 400g caster sugar
  • 1 teaspoon bicarbonate of soda
  • 1/2 teaspoon salt
  • 120ml soured cream
  • 2 eggs
  • 225g butter
  • 250ml water
  • 5 tablespoons unsweetened cocoa powder
  • For the icing
  • 6 tablespoons milk
  • 5 tablespoons unsweetened cocoa powder
  • 115g butter
  • 500g icing sugar
  • 1 teaspoon vanilla extract
  • 120g chopped walnuts (optional)

Prep:10min  ›  Cook:20min  ›  Ready in:30min 

  1. Preheat oven to 180 C / Gas 4. Grease a 25x35cm Swiss roll tin.
  2. Combine the flour, sugar, bicarbonate of soda and salt in a large bowl. Beat in the soured cream and eggs; set aside.
  3. Melt the butter over low heat in a saucepan; add 250ml water and 5 tablespoons cocoa. Bring the mixture to the boil then remove from heat. Allow to cool slightly, then stir cocoa mixture into the dry ingredients, mixing until blended.
  4. Pour cake batter into prepared tin. Bake in the preheated oven for 20 minutes, or until a skewer inserted into the centre comes out clean.
  5. For the icing: In a large saucepan, combine the milk, 5 tablespoons cocoa and 115g butter. Bring to the boil, then remove from heat. Stir in the icing sugar and vanilla, mixing until blended. Spread icing over warm cake and top with chopped walnuts.

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Reviews (1)


This is probably the yummiest chocolate cake recipe I've ever tried. I did find however that the butter/water/cocoa mixture that you add to the other ingredients was just too much and if I'd added it all the cake wouldn't have set. I used maybe 3/4 of that liquid for the cake batter, and added powdered sugar to the rest which made an amazing fudgy icing. I did not make the icing recipe provided here. I baked the cake in an average square pan and it took about 40 mins. Delicious cake but I do think the water measurement is inaccurate. I will definitely make again though. - 15 Aug 2016

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