Step 1
Preheat oven to 160ºC / 180ºC fan/Gas Mark 3.
Place butter and sugar into a bowl and beat until light, fluffy and pale in colour.
Step 2
Add eggs and flour and combine all the ingredients together. Slowly add the food colour and mix to achieve the desired shade.
Step 3
Pour cake mixture into the prepared cake tin and bake in the centre of the oven for 30-35 minutes until well risen and firm to touch.
Step 4
Leave to cool in the tin for a few minutes then turn out onto a cooling rack. Leave to cool.
Step 5
Repeat the process for the remaining colours.
Step 6
Beat the the butter, sifted icing sugar and vanilla flavour together until smooth to make the buttercream.
Step 7
Trim and level your cakes. Layer each colour using buttercream.
Step 8
Coat the cake with the remaining buttercream.
Step 9
Decorate and enjoy!
Tag @pmecake so we can see your amazing cakes!
Tip 1
To avoid a wonky cake, make sure your layers are neatly trimmed. For a straight top use a cake leveller and for the sides place a cake board slightly smaller than the cake and trim off the cake crust using a serrated knife!
Tip 2
Test bake your colours with a cupcake to help you decide on a shade of colour!