4. Add ½ tsp of vanilla extract, 110g of self-raising flour and a pinch of salt. Whisk them until they all combine, then add the mixture to the cupcake cases.
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5. Bake for 15 minutes, until the cakes are golden brown. Then leave to cool completely.
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6. For the buttercream, whisk 150g of softened butter until it’s soft. Then add 300g of icing sugar, 1tsp of vanilla extract and a pinch of salt.