Five pastel layers form this colorful creation. You can also use the batter to make four dozen cupcakes or a two- or three-layer cake (bake each layer a few minutes longer than instructed). Use our Seven-Minute Frosting if you'd prefer a bright-white, swoopy finish.

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Recipe Summary

prep:
1 hr 45 mins
total:
3 hrs 15 mins
Yield:
Makes one 8-inch layer cake
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Ingredients

Ingredient Checklist

Directions

Instructions Checklist
  • Preheat oven to 350 degrees. Butter five 8-inch round cake pans, and line with parchment (you may need to bake in batches). Butter parchment, and dust with flour, tapping out excess. Sift flour, baking powder, and 1/2 teaspoon salt into a large bowl. Combine milk and vanilla. Beat butter with a mixer on medium speed until very smooth. With machine running, gradually add sugar, and beat until pale and fluffy, about 3 minutes.

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  • Reduce speed to low, and add flour mixture in 3 additions, alternating with milk mixture, beginning and ending with flour. Beat until just combined; do not overmix.

  • Beat egg whites in a clean mixer bowl on medium speed until stiff (but not dry) peaks form, about 3 minutes. Gently fold egg-white mixture into batter in 3 additions.

  • Divide batter among 5 bowls, and tint each with food coloring to create different pastel shades. Spread each into a prepared pan. Bake until a toothpick inserted into the centers comes out clean, 18 to 20 minutes. Let cool completely in pans on wire racks.

  • Loosen edges of cake with a small metal spatula or paring knife; invert onto racks. Discard parchment. Reinvert cakes, top side up. Let cool completely.

  • Trim top of each cake to make surface even. Spread 1 cup buttercream onto top of 1 cake. Top with another cake. Repeat, spreading 1 cup buttercream between each layer. Frost cake with 1 1/2 cups buttercream. Refrigerate for 30 minutes. Frost cake with 2 cups buttercream.

Cook's Notes

To make ahead, unfrosted cakes can be stored at room temperature for up to 2 days. Leftover frosted cake can be stored in refrigerator up to 2 days.

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