Rainbow Sprinkle Cake Recipe
This is not your bake-at-home sprinkle cake! This three-layered dessert is made with cake-batter-flavored white cake, vanilla-flavored buttercream and lots and lots of rainbow sprinkles – inside and out.
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Ingredients
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Cake and Frosting Ingredients
Method
Cake Preparation and Assembly
- 1
Preheat the Oven
Preheat your oven to 350°F (175°C). Grease and flour three 9-inch round cake pans.
- 2
Mix Dry Ingredients
In a large bowl, whisk together flour, sugar, baking powder, baking soda, and salt.
- 3
- 4
Add Eggs and Vanilla
Add the eggs one at a time, mixing well after each addition. Then stir in the vanilla extract.
- 5
Combine with Dry Ingredients
Alternately add the dry mixture and buttermilk to the butter mixture, starting and ending with the dry ingredients. Mix until just combined. Fold in the rainbow sprinkles.
- 6
Bake the Cakes
Divide the batter evenly among the three prepared pans. Bake for 25-30 minutes or until a toothpick inserted in the center comes out clean.
- 7
Cool the Cakes
Allow the cakes to cool in the pans for 10 minutes, then transfer to wire racks to cool completely.
- 8
Prepare the Buttercream
In a large bowl, beat the heavy cream until soft peaks form. Gradually add powdered sugar and continue beating until stiff peaks form.
- 9
Assemble the Cake
Place one cake layer on a serving plate. Spread a layer of buttercream on top, then repeat with the second layer. Add the final layer on top.
- 10
Frost and Decorate
Frost the top and sides of the cake with the remaining buttercream. Decorate the top and sides with additional rainbow sprinkles.

