Chocolate cake with decorations and sprinkles

Chocolate traybake

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(7 ratings)

Prep: 15 mins Cook: 30 mins

Easy

Serves 10

This American-style chocolate traybake is super-easy, can be prepared in advance and cuts into even portions. It's perfect for birthday parties or bake sales

Nutrition and extra info

  • un-iced only
  • Vegetarian

Nutrition: per serving

  • kcal330
  • fat18g
  • saturates6g
  • carbs37g
  • sugars26g
  • fibre2g
  • protein4g
  • salt0.5g
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Ingredients

    For the chocolate sponge

    • 185ml vegetable oil, plus extra for the tin
    • 250g plain flour
    • 80g cocoa powder
    • 2 ½ tsp baking powder
      Baking powder

      Baking powder

      bay-king pow-dah

      Baking powder is a raising agent that is commonly used in cake-making. It is made from an alkali…

    • 1 tsp bicarbonate of soda
      Bicarbonate of soda

      Bicarbonate of soda

      Bicarbonate of soda, or baking soda, is an alkali which is used to raise soda breads and full-…

    • 325g light brown soft sugar
    • 250ml buttermilk
      Buttermilk pancake mixture in bowl with whisk

      Buttermilk

      buh-ter-mill-k

      There are two types of buttermilk. Traditional buttermilk is a thin, cloudy, slightly tart but…

    • 125ml strong coffee or espresso, (can be warm, but not hot)
    • 2 tsp vanilla extract
    • 2 large eggs

    For the icing

    • 150g salted butter, softened
    • 200g icing sugar
    • 4 tbsp cocoa powder
    • 2 tbsp milk

      Milk

      mill-k

      One of the most widely used ingredients, milk is often referred to as a complete food. While cow…

    • sprinkles, sweets, chocolate shavings or nuts, to decorate

    Method

    1. Heat oven to 180C/160C fan/gas 4. Oil and line the base and sides of a 33cm x 23cm roasting tin or cake tin with a lip of at least 2½ cm. Combine the flour, cocoa powder, baking powder, bicarb, sugar and a good pinch of salt in a large bowl. Rub any lumps of sugar between your fingers, shaking the bowl a few times to bring them to the surface.

    2. Whisk the oil, buttermilk, coffee, vanilla and eggs in a jug, then pour the wet ingredients into the dry. Use a spatula to stir well, removing any pockets of flour. Pour the mixture into the lined tin and bake for 25-30 mins until a skewer inserted into the centre comes out clean. If any wet cake mixture clings to the skewer, return the cake to the oven for 5 mins, then check again. Once cooked, remove from the oven and leave to cool in the tin for at least 20 mins.

    3. Meanwhile, make the icing. Melt the butter in a saucepan, then remove from the heat and stir in the icing sugar, cocoa powder and milk. The icing will be very runny but will thicken a little as it cools. (If the icing has set too much before the cake has cooled, reheat it slightly to make it easier to pour.)

    4. Pour the icing over the cake and leave to set. Decorate with the sweets, sprinkles, chocolate shavings or nuts, then cut into squares and dig in.

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    Comments, questions and tips

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    SueFuller27
    26th Oct, 2019
    5.05
    Perfect - I made it for a christening party and it vanished really quickly. I was especially impressed with the texture of the sponge and how much it rose.
    daffers
    22nd Oct, 2019
    5.05
    This an excellent recipe. Quick and easy and will feed a crowd. I made it for my daughters house warming party and it was loved by all. It also keeps very well. Will definitely be making again.
    Lomastha
    7th Aug, 2019
    5.05
    This is really delicious and very quick and easy to whip up. I do a 1.5 portion of the frosting which is so tasty and better than a bog standard buttercream.
    gabrielledean
    20th Mar, 2019
    5.05
    the easiest and best chocolate tray bake I've ever made! Used the recipe for my daughter's birthday cake and hands down the best one I've ever made. Will be using for many more birthdays to come.
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