Preheat oven to 180°C/160°C fan/Gas Mark 4.
Whisk all the ingredients together until smooth and creamy
Set out your cake or muffin cases on a cake tin if you have one and put a spoonful of the mixture in each one
Cook for about 10-15 minutes, when cooked they should spring back if lightly pressed
Leave to cool in the tin for 5 minutes before leaving to cool completely in their cases on a wire rack before decorating