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–+ servings
A close up of a bowl with marshmallow frosting swirled inside
4.84 stars (42 ratings)

5 Minute Fluffy Marshmallow Frosting

This Marshmallow Buttercream Frosting recipe is so fluffy and super easy to make, it only takes 5 minutes! It is made with marshmallow fluff and is the perfect for topping cupcakes, frosting cakes, or using on your favorite desserts. It's sweet and creamy and delicious any time of year!

Ingredients

  • 1 cup unsalted butter, softened to room temp (226 g)
  • 3 cups powdered sugar, (340g)
  • 7 oz marshmallow cream, (200g)
  • 1 tsp vanilla extract
  • 1 tsp milk
  • 1 pinch salt

Instructions
 

  • In the bowl of a hand or stand mixer fitted with the paddle attachment, add the softened butter and confectioners sugar.
  • Mix on low speed moving up to medium as the mixture combines. Continue mixing for 1 minute.
  • Stop and scrape down the mixer with a rubber spatula.
  • Add in the 7 oz marshmallow cream andmix on medium high speed for 1 minute.
  • Add in the vanilla, milk, and salt and mix again for 1 minute.
  • Frost on cooled cake or refrigerate for 30 minutes to pipe onto cupcakes.

Notes

Slather this on to any cake or cupcake right away. If you want to pipe it and have it hold its shape you will need to chill it for 30 mins first. 

Storage

Storing: Store the marshmallow buttercream frosting in an airtight container for up to one week in the fridge or on the counter. You can also store this at room temp but if you want to pipe it, put it in the fridge for 30 minutes to let it firm up before using.
Freezing: This icing will not freeze well because the marshmallow fluff may separate when thawed. I don't recommend freezing!
Serving: 1portion, Calories: 304kcal, Carbohydrates: 44g, Protein: 1g, Fat: 15g, Saturated Fat: 10g, Polyunsaturated Fat: 1g, Monounsaturated Fat: 4g, Trans Fat: 1g, Cholesterol: 41mg, Sodium: 6mg, Potassium: 6mg, Sugar: 40g, Vitamin A: 473IU, Calcium: 5mg, Iron: 1mg
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