Thursday, 7 June 2012

Rainbow Cake Recipe

Here it is! Rainbow cake tutorial, as made by my talented sister Josie Brennan!


  • 380g all-purpose flour
  • 4 teaspoons baking powder
  • 1/2 teaspoon salt
  • 230g unsalted butter
  • 470g sugar
  • 5 large egg whites
  • 2 teaspoons vanilla extract
  • 340g milk
  • A couple of tubs of Buttercream icing
  • Red, Yellow and Blue food dyes

  • Preheat the oven to 350 degrees (gas mark 4).
  • In a large bowl whisk together the flour, baking powder and salt and set aside.
  • Cream together butter and sugar, and slowly add the egg whites and mix until well combined. 
  • Add vanilla and stir until fully mix, and then add the milk and flour mixture a little at a time.
  • Divide the mixture evenly between six medium bowls
  • Use the food dyes and mix into each bowl to create 6 different colours (see below for colour combinations).
  • Transfer each colour to an individual cake pan then put in the oven for approximately 15 minutes, or until a knife inserted into the centre comes out clean. (You may need to do this in batches if you don't have 6 cake trays!).
  • Remove cakes from the oven and transfer to a wire rack allow each cake to cool completely.
  • Trim the tops of the cakes using a serrated knife to ensure each layer is completely flat (you don't want a wonky cake!).
  • Stack the layers on top of each other using buttercream icing to secure them (you can buy it ready made, or this recipe is quite simple). Take your time to make sure the layers are evenly stacked, the order from bottom to top should be: purple, blue, green, yellow, orange, red.
  • Cover the entire cake in more buttercream icing and decorate with whatever you like. This cake is covered in M&M's to stick the rainbow theme. Then you're done! 

Colour Combinations:
Green = lots of Yellow + a little Blue 
Orange = lots of Yellow + a little Red
Purple = lots of Red + a little Blue
Each brand of dye varies, so it's best to use only a few drops at a time, mix and then repeat until you've got the shade you're after. Try and make sure each layer is very different even if you cant get the exact colour you had in mind (e.g. this orange was quite peachy!)

P.S. if you have a go at this, I'd love to see how yours turns out! 
Hannah xx

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