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Rainbow Cake

    Categories:

  • Cakes & Cupcakes
  • Desserts
  • Summer
  • Spring
  • Summer
  • Golden Yellow Sugar
  • Icing Sugar

Never mind a pot of gold; what we found at the end of the rainbow was the recipe for this delicious, and oh-so-pretty cake.

Prep Time
1 hour 20 minutes
45 mins of chilling time
Cook Time
25 to 30 minutes
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Redpath® Golden Yellow Sugar

Light-coloured and just right for baking, the subtle notes of caramel and moist texture make it ideal for allowing delicate flavours to shine through in your creations.

Redpath® Special Fine Granulated Sugar 2kg

An economically-sized bag of our versatile granulated sugar, it’s ideal for sweetening coffee and tea, baking, preserving, canning, and cooking.

Redpath® Icing Sugar

Use it to make the smoothest frostings, icings, and glazes you’ve ever seen for the finishing touch on your cakes, cupcakes, and more.

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Servings

For the cakes:

  • 2 cups (250 g) all purpose flour 2 cups (250 g) all purpose flour
  • 2 cups (224 g) cake flour 2 cups (224 g) cake flour
  • 4 tsp (20 g) baking powder 4 tsp (20 g) baking powder
  • ¾ tsp (4 g) salt ¾ tsp (4 g) salt
  • 1¼ cup (284 g) unsalted butter, room temperature 1¼ cup (284 g) unsalted butter, room temperature
  • 1 cup (200 g) Redpath® Granulated Sugar 1 cup (200 g) Redpath® Granulated Sugar
  • 1 cup (217 g) Redpath® Golden Yellow Sugar, packed 1 cup (217 g) Redpath® Golden Yellow Sugar, packed
  • 5 large eggs, room temperature 5 large eggs, room temperature
  • ½ tsp (2.5 ml) lemon extract ½ tsp (2.5 ml) lemon extract
  • ½ tsp (2.5 ml) vanilla extract ½ tsp (2.5 ml) vanilla extract
  • 1 cup (240 ml) buttermilk, room temperature 1 cup (240 ml) buttermilk, room temperature
  • Gel food colouring in red, yellow, orange, green, blue and violet Gel food colouring in red, yellow, orange, green, blue and violet

For the frosting:

  • 1½ cups (341 g) unsalted butter, softened 1½ cups (341 g) unsalted butter, softened
  • 1½ cup (340 g) cream cheese, softened 1½ cup (340 g) cream cheese, softened
  • 4½ cups (540 g) Redpath® Icing Sugar 4½ cups (540 g) Redpath® Icing Sugar
  • 2 tbsp (30 ml) lemon juice 2 tbsp (30 ml) lemon juice
  • ¼ tsp (2 g) salt ¼ tsp (2 g) salt

Instructions

For the cakes:

Step 1

Preheat oven to 350°F (175°C). Grease three 8 inch (20 centimeter) cake tins. Line the bottoms with parchment paper and grease the parchment. Set aside.

Step 2

In a large bowl sift together the flour, baking powder and salt; set aside.

Step 3

Using an electric mixer or in the bowl of a stand mixer fitted with the paddle attachment beat the butter, Redpath® Granulated Sugar and Redpath® Golden Yellow Sugar on medium speed until pale and fluffy, 4 minutes.

Step 4

Add the eggs one at a time, allowing each egg to fully incorporate before adding the next.

Step 5

Mix in the lemon and vanilla extracts.

Step 6

Reduce speed to low and alternate adding 1/3 the flour mixture to the butter mixture with 1/2 the milk, scraping down the sides of the bowl as necessary, until all ingredients are combined.

Step 7

Split batter evenly into 6 bowls (each bowl should have about 260 millilitres (280 grams) of batter.

Step 8

Colour each batter a different rainbow shade. Start adding colouring a couple of drops at a time until desired shade is reached (the colour of the batter will be the same after baking).

Step 9

Scrape three colours of batter into the prepared pans and smooth each with an offset spatula (take care to clean spatula between colours).

Step 10

Bake in oven until cake is set in the middle and springs back when gently pressed, about 12 to 14 minutes.

Step 11

Remove from oven and cool 5 minutes. Run a sharp paring knife around the edge of the cake. Cool 5 minutes more and using oven mitts or a teatowel to hold the pan if still hot, carefully turn cakes out onto a cooling rack.

Step 12

Wash and dry cake pans. Repeat greasing the pans, lining the bottom with parchment and greasing the parchment.

Step 13

Scrape the remaining 3 colours of batter into the pans, smooth and bake as directed.

Step 14

Allow cakes to cool completely before assembling.

For the frosting:

Step 1

Using an electric mixer or in the bowl of a stand mixer fitted with the paddle attachment beat the cream cheese and butter on medium speed until smooth.

Step 2

Beat in the the Redpath® Icing Sugar about a cup a a time until smooth. Add in the lemon juice and vanilla.

For the assembly:

Step 1

Level the tops of the cakes using a serrated knife.

Step 2

Place a small dollop of frosting on a cake stand or plate and invert the violet layer over top. 

Step 3

Using an offset spatula, spread the cake with about 2/3 cup (145 g) of frosting. Repeat layering with frosting the blue, green, yellow, orange and red cakes.

Step 4

Cover the sides and top of the cake with a thin layer of frosting and chill in refrigerator for 15 minutes.

Step 5

Spread the remaining frosting evenly over the top and sides of the cake.

Step 6

Chill cake for 30 minutes in refrigerator before slicing and serving.

Chef's Tips


*Coconut or almond extract may be used in place of the lemon extract.

*Be sure to use gel food colouring. Traditional liquid food colouring may add too much extra moisture to the batter.

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