A colorful and nostalgic vanilla layer cake filled with Fruity Pebbles cereal and topped with fluffy buttercream frosting for a fun, celebration-worthy dessert.
12 tablespoons unsalted butter, softened
1 1/2 cups white granulated sugar
2 cups all-purpose flour
2 teaspoons baking powder
1/4 teaspoon salt
6 large egg whites
3/4 cup milk
2 teaspoons vanilla extract
3/4 cup Fruity Pebbles cereal, plus more for decorating
2 cups unsalted butter, softened (for frosting)
32 oz powdered sugar (2-pound bag)
2–4 tablespoons milk (for frosting)
2 teaspoons vanilla extract (for frosting)
Do not overmix the batter to keep the cake tender.
Add cereal topping just before serving to maintain crunch.
For cupcakes, bake 18–22 minutes.
Store at room temperature for up to 2 days or refrigerate for up to 5 days.
Freeze unfrosted cake layers for up to 2 months.
Add a pinch of salt to frosting to balance sweetness if desired.