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Serves
8
Prep
30
mins
Cooking
50
mins
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Rainbow Cake

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Directions
Step 1

Preheat oven to 180oC/160oC fan-forced. Grease three 7cm-deep, 20cm (base) round cake pans or three 4cm-deep, 20cm base round cake pans. Line bases and sides with baking paper.

Step 2

In a large bowl using an electric mixer, beat butter, vanilla and sugar until light and fluffy. Add eggs, one at a time, beating after each addition. Stir in flour, baking powder and milk until combined.

Step 3

Divide batter between 6 bowls. Tint 1 portion blue, 1 portion green, 1 portion yellow,1 portion orange, 1 portion purple and the last red. Spread 1 portion into 1 prepared cake pan. Repeat with remaining 2 portions and prepared pans. Smooth surfaces. Bake for 25 minutes, rotating halfway during cooking, or until cooked through. Stand cakes in pans for 5 minutes. Turn out onto wire racks to cool completely. Wash and dry cake pans. Grease and line with baking paper. Repeat with remaining cake mixtures.

Step 4

To make frosting, place eggwhites, vanilla, sugar and 1/4 cup cold water in a large heatproof bowl. Whisk to combine. Place bowl over a saucepan of simmering water. Using an electric hand mixer, beat eggwhite mixture for 15 minutes or until stiff peaks form.

Step 5

Remove bowl from heat. Beat until cooled.

Step 6

Place purple cake on a 30cm round cake board. Spread with 1/2 cup frosting. Top with blue cake. Repeat with remaining frosting and green, yellow, orange and red cakes, using 1/2 cup frosting for each layer. Spread remaining frosting over top and side of cake or decorate as desired with chocolate ganache or royal icing.

Ingredients
  • 250g butter, softened
  • 2 tsps vanilla essence
  • 1 1/2 cups caster sugar
  • 4 eggs, lightly beaten
  • 3 cups plain flour, sifted
  • 6 tsps McKenzie's Baking Powder
  • 1 cup milk
  • 8 egg whites
  • 4 cups caster sugar
  • 1 tsp vanilla extract
  • food colouring blue, green, yellow & red

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Related Products


  • McKenzie's Baking Powder 125g

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