Sweet, fluffy, and super creamy, this marshmallow fluff frosting is an easy way to level up any dessert. Marshmallow fluff gives it that classic, nostalgic flavor. It comes together quickly, pipes like a dream, and adds a cloud-like texture to cakes, cupcakes, cookies, and more.
In the bowl of a stand mixer fitted with the paddle attachment, beat the softened butter on medium-high speed until light and fluffy for about 2 minutes.
226 grams unsalted butter
Scrape down the sides of the bowl with a rubber spatula, then mix in the marshmallow fluff on medium speed until smooth.
200 grams marshmallow fluff
Add the powdered sugar gradually, in 2-3 additions, mixing on low speed. Scrape down the sides of the bowl after each addition.
300 grams powdered sugar
Add the vanilla and salt, then increase the mixer speed to medium-high. Beat for 2-3 minutes or until the frosting is thick, fluffy, and easy to spread or pipe.
2 teaspoons vanilla extract, ¼ teaspoon salt
Transfer to a piping bag or spread directly onto cooled cakes, cupcakes, or cookies!
Notes
If you have a 7.5 ounce jar of fluff, use the whole thing.
If the frosting is too thin, refrigerate for 30 minutes. You can also add extra powdered sugar (or cornstarch), 1 tablespoon at a time, until thickened.
If the frosting is too thick, mix in milk or cream, 1 teaspoon at a time, until smooth.
This recipe makes enough to frost 12 cupcakes or a 6-8 inch two-layer cake.