Ingredients; 150g butter, 150g caster sugar, 3 eggs, 150g self raising flour, vanilla extract, a variety of food colourings.
Bake in the oven at 180 for about 25 mins.
Once cool you can fill the cake with either butter cream or jam. Decorate it however you like. Coloured smarties might look good. We had run out of icing sugar so we went for jam filling and a sprinkle of sugar on top. It would make a fantastic cake for a Rainbow Party. It's lots of fun whatever you make it for!