Best Ever Marshmallow Buttercream Frosting is the most delicious homemade buttercream frosting recipe you'll ever taste! Made in minutes with just 5 ingredients; everyone adores this marshmallow buttercream recipe.
Cream the butter until it is lighter in color, about 1 minute. Add the marshmallow creme.
Whip for 2 minutes. Add 2 cups powdered sugar and continue to beat for 2 minutes. Add vanilla extract and milk. Beat an additional minute. Add additional powdered sugar, if desired. (if you plan to pipe the frosting, you'll want to add the full 3 cups of powdered sugar.)
*If you're frosting cupcakes, a slightly thicker frosting is better because they hold their shape. However if you're frosting a cake, I'd add more milk- 3 TBSP or even 4, so that you can spread the frosting well.