Imagine a slice of heaven painted with the colours of joy and sprinkled with edible stardust. That’s our Rainbow Birthday Cake – a sweet symphony of colour that whispers, ‘Celebrate life, one vibrant layer at a time. So grab your fork, chase rainbows and let the frosting dreams begin!
Ingredients:
- 8 large eggs (room temperature)
- 1 cup whole milk (room temperature)
- 1 pound (4 sticks) unsalted butter
- vegetable shortening (for greasing pans)
- flour (for dusting pans)
- 4 teaspoons vanilla extract
- 3 cups granulated sugar
- 3 1/2 cups cake flour
- 4 teaspoons baking powder
- 2 teaspoons salt
- 1 1/2 cups vanilla (reverse egg and milk mixture)
- vanilla (remaining egg and milk mixture)
- gel food colouring (in your chosen colours)
- 5 drops purple (soft gel paste)
- 8 drops of blue (soft gel paste)
- 6 drops of green (soft gel paste)
- 4 drops of yellow (soft gel)
- 5 drops of orange (soft gel paste)
- 8 drops red (soft gel paste)
- 30 oz. white icing
- rainbow sprinkles
Method:
Preheat the oven to 175°C (350°F).
Grease three 8-inch round cake tins with vegetable shortening and line the bottoms with baking paper. Dust with flour to prevent sticking.
In a large mixing bowl, whisk together the dry ingredients: 3 1/2 cups cake flour, 3 cups granulated sugar, 4 teaspoons baking powder and 2 teaspoons salt.
In a separate bowl, combine the wet ingredients: 8 large eggs, 1 cup whole milk, 1 pound melted and cooled unsalted butter and 4 teaspoons vanilla extract.
Gradually add the wet mixture to the dry, beating until smooth.
Divide the mixture into six equal portions.
In separate bowls, mix each portion with the desired food colouring:
- Purple: 5 drops of purple
- Blue: 8 drops of blue
- Green: 6 drops of green
- Yellow: 4 drops of yellow
- Orange: 5 drops of orange
- Red: 8 drops of red
Starting with purple, pour each coloured batter into the prepared pans to create rainbow layers.
Bake for 25-30 minutes or until a toothpick inserted in the centre comes out clean.
Leave the cakes to cool in the cake tins for 10 minutes, then transfer to wire racks to cool.
Place the purple cake on a cake stand or serving platter.
Spread a thin layer of white icing on top.
Place the blue layer on top, frost and continue with the remaining layers in rainbow order.
Cover the entire cake with white icing.
Sprinkle the cake with rainbow sprinkles.
Slice to reveal the vibrant rainbow inside!
