01 - Place 3/4 cup of Fruity Pebbles cereal in a food processor or blender and pulse until finely crushed. Reserve the remaining 1/4 cup for garnish.
02 - In a large mixing bowl, beat the softened butter with a hand mixer or stand mixer until creamy and smooth.
03 - Gradually add the powdered sugar, mixing on low speed until fully combined.
04 - Add the crushed Fruity Pebbles, vanilla extract, and 2 tablespoons of milk. Beat until fluffy and fully blended. If the frosting is too thick, add an additional tablespoon of milk to reach the desired consistency.
05 - Spread or pipe the frosting onto cooled cupcakes, cookies, or cake.
06 - Sprinkle the reserved whole Fruity Pebbles on top as a colorful garnish.