Marshmallow Frosting Recipe

Last Updated on November 10, 2022 by Janell

This Marshmallow Frosting Recipe is so easy! It's perfect on cakes and cupcakes!

My daughter had this idea to make a smores cake so we threw some ingredients together to make a marshmallow buttercream icing. It's so easy and you don't need to use eggs!

It's an easy recipe that uses marshmallow fluff. You don't have to bake it and it is a recipe for marshmallow frosting that does not use cream of tartar.

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Marshmallow Frosting Recipe

2 sticks of unsalted butter, softened
1 - 7oz jar marshmallow cream
2 teaspoons vanilla
3 cups powdered sugar
1 - 1 ½ Tablespoons heavy whipping cream

Instructions to make Marshmallow Frosting:

In a stand-up mixer mix together the marshmallow fluff, butter, and vanilla. Beat for about 2 minutes until fluffy.
Add half the powdered sugar and 1 tablespoon of heavy whipping cream. Turn the mixer on low so that powdered sugar doesn't go everywhere!
Add the remaining powdered sugar and mix until it's well combined. Add about ½ tablespoon of heavy whipping cream if necessary.

This recipe will frost a 9x13 cake. a 9-inch layer cake or 24 cupcakes if icing with a knife and not piping the icing. I would do the recipe 1.5 times if you want to pipe the recipe onto the cupcakes.

I would love to use this recipe to make Smores marshmallow cupcakes. My kids thought it tasted so good! Plus it is so easy to just throw into a mixer. It's a great way to add a little variety to your cakes.

Here's a sneek peek of the cake I am working on! I will update this post when I publish the recipe!