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Easy Homemade Rainbow Cake
Ingredients
  • subheading: Vanilla Rainbow Cake:
  • 3 cups ( 390g) all purpose flour
  • 3 tsp baking powder
  • 1 tsp salt
  • ¾ cup ( 168g) unsalted Challenge butter, room temperature
  • ¼ cup (60ml) vegetable oil
  • 2 cups ( 414g) sugar
  • 4 eggs
  • 1 tbsp vanilla extract
  • 1 ⅓ cups (400ml) buttermilk*
  • Violet gel icing color
  • Royal Blue gel icing color
  • Leaf Green gel icing color
  • Lemon Yellow gel icing color
  • Orange gel icing color
  • Red gel icing color
  • subheading: Vanilla Rainbow Buttercream:
  • 2 cups ( 448g) salted Challenge butter, room temperature
  • 1 cup ( 189g) shortening
  • 11 to 12 cups ( 1265g-1 380g) powdered sugar
  • 1 tbsp vanilla extract
  • 4 to 5 tbsp (60 to 75ml) water or milk
  • Violet gel icing color
  • Royal Blue gel icing color
  • Leaf Green gel icing color
  • Lemon Yellow gel icing color
  • Orange gel icing color
  • Red gel icing color
Steps
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