Nutrition and extra info

  • Vegetarian
  • Nutrition: Per serving

  • kcal418
  • fat23g
  • saturates14g
  • carbs50g
  • sugars41g
  • fibre0g
  • protein3g
  • salt0.4g
  • Ingredients
  • Method
  • Ingredients

  • 110g unsalted butter, softened
  • ½ tsp vanilla extract
  • 110g caster sugar
  • 2 large eggs



    The ultimate convenience food, eggs are powerhouses of nutrition packed with protein and a…

  • 110g self-raising flour
  • red, blue and yellow gel food colouring
  • sprinkles (optional)
  • For the buttercream

  • 150g butter, softened



    Butter is a dairy product made from separating whole milk or cream into fat and…

  • 300g icing sugar
  • 3 tbsp milk



    One of the most widely used ingredients, milk is often referred to as a ‘complete’ food…

  • Method

    1. Heat the oven to 180C/160C fan/gas 4 and fill a cupcake tray with 10 cases.

    2. Beat the butter, vanilla and caster sugar together with an electric whisk until pale and fluffy. Gradually whisk in the eggs, scraping down the sides of the bowl after each addition.

    3. Mix in the flour and a pinch of salt until just combined. Divide into five bowls and colour each a different shade with a drop of food colouring. We chose red, yellow, green, blue and purple. 

    4. Starting with the end of the rainbow (in our case purple), evenly spread 1 tsp of the mixture into each cupcake case using a piping bag or the back of a teaspoon. Top with 1 tsp of the next colour and spread – be careful not to mix the colours together whilst bringing the mix all the way to the edge of the case. Repeat until all the colours are used up and you’re left with an even layer of red on the top. 

    5. Bake for 15 mins, until a skewer inserted into the middle of each cake comes out clean. Leave to cool completely on a wire rack.

    6. To make the buttercream, beat the butter until very soft. Add the icing sugar, vanilla extract and a pinch of salt and whisk together until smooth (start off slowly to avoid an icing sugar cloud). Beat in the milk until combined.

    7. Pipe the buttercream on top of the cupcakes using a circular nozzle, or spread on with a palette knife. Top with sprinkles, if you like.

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