Preheat oven to 180C/160C fan/gas 4.

Cream the butter and sugar together in a bowl.

Stir in the beaten eggs and vanilla extract.

Sift in the self-raising flour and mix until just combined.

Take care not to overmix.

Transfer the mixture into cupcake cases, filling halfway.

Bake in the oven for 20 minutes.

When the cupcakes are ready they will have risen and be a golden brown colour. If in doubt, check they are cooked through by inserting a metal skewer/cocktail stick and checking if it comes out dry.

Leave to cool on a wire rack before decorating.

To make the buttercream icing beat the butter in a bowl until soft. Add the icing sugar and stir in. Divide the buttercream icing depending on how many different colours you want to use. Stir in a few drops of your chosen food colouring and mix until the colour is even throughout.

Decorate with sweets and cake toppings according to your own preference!