rainbow cake method

Sponge Ingredients (this is enough for 7 x 6-7 inch cakes) 7 eggs 420g self-raising flour 420g butter 420g sugar 7 different food colourings (Wilton is the best) vanilla essence Icing Ingredients 350g unsalted butter, softened 700g icing sugar 4-5 tbs milk Method Preheat the oven to 170C. Combine all the ingredients, being careful [...]