Pin It Start with a creamy base of 1/2 cup softened butter and sifted powdered sugar, then fold in about 3/4 cup finely crushed Fruity Pebbles and 2–3 tablespoons milk until light and fluffy. Reserve whole cereal for a colorful garnish and adjust milk for spreadable or pipeable texture. For dairy-free swaps use plant-based butter and non-dairy milk. Yields about 2 cups, enough for 12 cupcakes.
My kitchen counter looked like a crayon factory exploded the afternoon my niece challenged me to make a birthday cake that tasted like Saturday morning cartoons.
I brought a batch to a potluck and three grown adults asked if they could take the leftovers home in their purses.
Ingredients
- Unsalted butter (1/2 cup, softened): Room temperature butter is nonnegotiable here because cold butter leaves lumps that no amount of mixing can fix.
- Powdered sugar (2 cups, sifted): Sifting removes clumps and gives you that silky, pipeable texture.
- Milk (2 to 3 tablespoons): Start with two and only add the third if the frosting fights back against your spatula.
- Vanilla extract (1 teaspoon): Use the real stuff because imitation vanilla clashes with the cereal flavor.
- Fruity Pebbles cereal (1 cup, divided): Three quarters of a cup gets crushed into the frosting and the rest stays whole for a crunchy, colorful garnish.
Instructions
- Crush the cereal:
- Pulse three quarters of a cup of Fruity Pebbles in a food processor or blender until finely ground, shaking the bowl halfway through so nothing escapes the blades.
- Beat the butter:
- Whip the softened butter in a large mixing bowl with a hand mixer or stand mixer on medium speed until it turns pale and looks spreadably smooth.
- Add the sugar slowly:
- Pour in the powdered sugar a little at a time on low speed so it does not billow out of the bowl like a sweet dust storm.
- Bring it all together:
- Mix in the crushed cereal, vanilla extract, and two tablespoons of milk, then beat on medium high until fluffy, adding a third tablespoon of milk only if the frosting feels too stiff.
- Frost and garnish:
- Spread or pipe the frosting onto completely cooled cupcakes, cookies, or cake layers, then scatter the reserved whole Fruity Pebbles on top while the frosting is still tacky.
Pin It Watching my niece bite into her cupcake and immediately declare it the best day of her life made every colorful smear on my countertop worth it.
Picking the Right Cake Base
This frosting shines brightest on vanilla or funfetti cake because the neutral crumb lets the fruity cereal flavor take center stage.
Making It Dairy Free
Swap in a good quality plant based butter and your favorite non dairy milk and the results are nearly indistinguishable from the original.
Storage and Make Ahead
You can make the frosting a day in advance if you keep it in an airtight container in the refrigerator.
- Let it come to room temperature for thirty minutes before using.
- Give it a quick rewhip with your mixer to restore fluffiness.
- Do not garnish with the whole cereal pieces until right before serving.
Pin It Some recipes are just frosting, but this one is a party in a bowl. Slather it on anything and watch people grin.
Recipe Questions
- → What's the easiest way to crush Fruity Pebbles?
-
Place cereal in a sealed plastic bag and roll with a rolling pin, or use a food processor for a finer texture. Pulse briefly to avoid turning the cereal to dust; you want small bits for both flavor and color.
- → How do I adjust the frosting consistency for piping or spreading?
-
Add milk a teaspoon at a time: less for stiff, pipeable frosting and a little more for a spreadable, glossy finish. Chilling briefly firms the mixture for finer piping work.
- → Can this frosting be piped and what tip should I use?
-
Yes. For a classic swirl use an open star tip (e.g., 1M) or a round tip for smooth dollops. Keep the frosting chilled if your kitchen is warm to retain shape during piping.
- → How should I store leftover frosting and how long does it keep?
-
Store in an airtight container in the refrigerator for up to 4–5 days. Bring to room temperature and rewhip briefly before using. For longer storage, freeze in a sealed container for up to 1 month.
- → Are there dairy-free or vegan alternatives?
-
Yes—substitute plant-based butter and a splash of non-dairy milk (almond, oat, or soy) to achieve similar texture and flavor. Use powdered sugar that is certified vegan if needed.
- → Any allergen or pairing notes?
-
Contains milk and may contain wheat and soy from the cereal; always check packaging for traces of nuts. This frosting pairs especially well with vanilla, strawberry, or funfetti bases.
