Rainbow sponge cake

    1 hour

    This colourful spongecake is sure to delight. Six different colours of cake batter are mixed together to create this rainbow cake. You can also use this recipe to make cupcakes. Top with your favourite frosting.

    432 people made this

    Serves: 8 

    • 3 egg whites
    • 520g sponge cake mix
    • 325ml water
    • 2 tablespoons vegetable oil
    • red paste food colouring
    • orange paste food colouring
    • yellow paste food colouring
    • green paste food colouring
    • blue paste food colouring
    • purple paste food colouring

    Prep:30min  ›  Cook:30min  ›  Ready in:1hr 

    1. Preheat an oven to 180 C / Gas 4. Grease and flour two 20cm round cake tins.
    2. Beat the egg whites with an electric mixer until frothy, about 1 minute. Add the sponge cake mix, water and rapeseed oil; continue beating for 2 minutes on medium speed.
    3. Divide the cake batter into six separate bowls. Use a cocktail stick to scoop a dab of food colouring into one bowl of batter and stir; add more food colouring, if necessary, to reach the desired shade. Repeat with the remaining colours and bowls of batter.
    4. Scoop spoonfuls of batter into the prepared tins, alternating the colours. Use a cocktail stick to gently swirl the colours for a marbled effect.
    5. Bake in the preheated oven until a cocktail stick inserted into the cake comes clean, about 30-35 minutes. Cool in the tins for 10 minutes before removing to cool completely on a wire rack.

    How to ice cupcakes

    Watch our How to ice cupcakes video to see how to dress them up or down for any occasion!

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    Reviews in English (234)


    I absulute loved making this cake it was so much fun and a delight to eat :D  -  29 Sep 2012


    Hope to make this for my daughters birthday very soon  -  09 Nov 2014


    This looks great, I will make sure to make one very soon!  -  13 Feb 2014