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Marshmallow Frosting Recipe

4.7 from 91 reviews

This light and fluffy Marshmallow Frosting is a sweet and creamy topping perfect for cupcakes and cakes. Made with salted butter, powdered sugar, pure vanilla extract, and marshmallow fluff, this frosting whips up easily to a smooth, airy consistency. It offers a delightful marshmallow flavor with a luscious texture that holds its shape beautifully for decorating.

Ingredients

Scale

Frosting Ingredients

  • ¾ cup salted butter, slightly softened
  • 1 ½ cups powdered sugar, sifted
  • 1 teaspoon pure vanilla extract
  • 7 ounces marshmallow fluff (Jet-Puffed brand preferred, 198g)

Instructions

  1. Beat the butter: In the bowl of your stand mixer fitted with a wire whisk, or in a medium (2-3 quarts) mixing bowl with a handheld mixer, beat the slightly softened butter on high speed until fluffy and pale yellow, about 3 minutes. Scrape down the sides of the bowl as needed to ensure even mixing.
  2. Add powdered sugar: Lower the mixer speed to low. Add the sifted powdered sugar ½ cup at a time, beating well after each addition. Scrape down the sides of the bowl after each addition. Once all powdered sugar is added, increase speed to high and mix for another 2½ to 3 minutes until the mixture is fluffy and well combined.
  3. Mix in vanilla: Reduce mixer speed to medium and add the pure vanilla extract. Mix just until no visible streaks of vanilla remain.
  4. Incorporate marshmallow fluff: Add all of the marshmallow fluff, scraping out as much as possible from the container. Mix on medium speed until just combined. Then increase speed to high and whip for an additional 3 to 4 minutes until the frosting is no longer sticky, and is light and fluffy.
  5. Store and use: Store the frosting covered in the refrigerator until ready to frost cupcakes or cakes. Let it sit at room temperature for a few minutes before transferring to a piping bag to decorate. The frosting can be frozen for up to 3 months; thaw overnight in the refrigerator and remix on high speed to restore fluffiness before using.

Notes

  • Use slightly softened butter (not room temperature) for the fluffiest texture.
  • Sifting powdered sugar prevents lumps and makes frosting smooth.
  • Carefully scrape down the bowl sides after each ingredient addition to ensure even mixing.
  • The frosting can be frozen; thaw completely and remix to re-inflate.
  • The frosting works well for cupcakes, cakes, and other desserts that need a light, marshmallow-flavored topping.

Keywords: Marshmallow frosting, fluff frosting, marshmallow fluff frosting, cupcake frosting, fluffy frosting, easy frosting recipe