Method

• 1.
  Preheat the oven to 180°C.
• 2.
  Beat the butter with the sugar in a mixing bowl, then add the egg.
• 3.
  In another mixing bowl, mix together the flour, vanilla, baking powder and salt, then stir in half of this dry mixture into the wet mixture. Add half the milk and beat. Add the other half of the dry mixture and milk and beat until the batter is smooth and well combined.
• 4.
  Fill six paper cupcake cases three quarters full and bake for 20–25 minutes. Remove from the oven and allow to cool for 30 minutes before decorating.
• 5.
  Once they have cooled, remove a teaspoon of cake from the middle and push half a strawberry into the hole (or a whole strawberry if it is small).

• 6.
  For the frosting, beat the softened butter with the cream cheese in a mixing bowl with an electric beater. Make sure it is quite smooth, then add the icing sugar and mascarpone. Beat the mixture for a few minutes until it is very smooth.
• 7.
  Divide this mixture between five bowls, and add a few drops of blue, pink, purple, yellow and green food colouring to each bowl. Mix in each colour well with a soft spatula. Fill the one piping bag with all the frosting colours.
• 8.
  Once the cupcakes have cooled, make rainbows with the multicoloured frosting in the piping bag. Top with a piece of candy floss and decorate with a paper unicorn, or a horn made from fondant icing.