Marshmallow Buttercream
Tiffany Hill
6 Cups
10 minutes
Dessert
A soft, fluffy buttercream with a light marshmallow sweetness and silky texture. Perfect for cakes, cupcakes, cookie cakes, and filling layered desserts.

Ingredients
- 1 cup salted butter, softened
- 2 cups marshmallow fluff
- 2 ½ cups powdered sugar
- 1 teaspoon vanilla extract
- 2–4 tablespoons heavy cream (optional, for a softer texture)
Directions
Step One: Cream the Butter
In a large mixing bowl, beat the softened butter on medium-high speed for 2–3 minutes until light and creamy.
Step Two: Add the Marshmallow Fluff
Add the marshmallow fluff and mix until fully incorporated and smooth. Scrape down the bowl as needed.
Step Three: Add Powdered Sugar
Add the powdered sugar gradually, mixing on low speed at first to prevent a sugar cloud.
Step Four: Add Flavor and Adjust Texture
Add the vanilla extract and mix until combined.
If a softer, silkier buttercream is desired, add heavy cream 1 tablespoon at a time until your preferred consistency is reached.
Step Five: Whip for Fullness
Beat on medium-high speed for an additional 1–2 minutes to create a light, airy texture.