Top your favorite cake or cupcakes with this easy Marshmallow Frosting. It is simple to make with only 5 ingredients and absolutely delicious.

Close up of chocolate cupcake topped with homemade marshmallow frosting
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Do you love marshmallow fluff? If so, you are going to love this recipe for marshmallow frosting. It is light and fluffy texture and the perfect frosting for all your easy cupcake recipes or cake recipes.

Homemade frosting is not difficult to make and tastes better than what you can buy. I can’t wait for you to try this along with Marshmallow Fluff Recipes.

Why This Recipe Works

We love making homemade bake goods and adding homemade frosting makes them even better. We know exactly the ingredients that are added and it always taste better.

The 5 ingredients are simple pantry ingredients which saves you time and money not having to run to the store.


Homemade Marshmallow Frosting Ingredients - butter, marshmallow fluff, powdered sugar, vanilla extract, milk
  • Butter- room temperature
  • Marshmallow Fluff (We have an easy homemade recipe for Marshmallow fluff.)
  • Powdered Sugar. Sift to remove any lumps.
  • Vanilla Extract. Pure vanilla is best.
  • Milk. This is optional.

Scroll to the bottom for the full recipe and ingredients in the recipe card.

How to Make Marshmallow Frosting

Combine butter and powdered sugar in a bowl

Step 1 – First, beat the butter and powdered sugar mixture until fluffy in a large mixing bowl with an electric mixer. You want this to be mixed together really well.

Mix in marshmallow fluff and vanilla

Step 2 – Second, add the marshmallow fluff and vanilla. It is best to mix this part by hand.

Step 3 – That is it! You can add the milk if it is too thick to get to the consistency you prefer. If you need to add the milk, start with a tablespoon and add more as needed.

Step 4 – Finally, put the frosting in a piping bag and decorate your cupcakes. You can also use this on a cake if you would rather do that.

Expert Tips

  • Piping bag for cupcakes I like to use a disposable decorator bag and just toss it when finished. One less thing to clean up and the cupcakes look fancy.
  • Stand mixer– I love my stand mixer to beat the powdered sugar and butter with the whisk attachment. It sure makes it easier. Just remember to add the marshmallow fluff and vanilla by hand.
  • Consistency – Add more powdered sugar if your frosting is too runny. Likewise, you can add more milk if it is too thick. Just make sure to add both of these in small increments.
  • Serving – This frosting is best served the day you decorate the cupcakes or cake.
Pipping bag with frosting with chocolate cupcakes on the side

How to Use

As you can see, the ideas are endless to use this delicious frosting. It really is so yummy on lots of things.


Store your leftovers in an airtight container for up to 2 days in the fridge.

Close up of chocolate cupcake topped with homemade marshmallow frosting

Frequently Asked Questions

Can I Make in Advance?

You can make this frosting up to 2 days in advance since it is a buttercream frosting and doesn’t have egg whites in it. Just make sure to store in the fridge until ready to use. You can even frost your cake or cupcakes and store them in fridge until ready to serve. But we do think it is best made when you are ready to serve your dessert.

How Much will this Frost?

This recipe makes enough for 12 cupcakes or one layer of cake. You can easily double the recipe if you need more.

What’s the difference between marshmallow cream and marshmallow fluff?

They are very similar in both flavor and consistency. However, the main difference is marshmallow cream contains cream of tartar and marshmallow fluff does not.

Can I use melted marshmallows instead of fluff?

Yes, but the melted marshmallows will need to be combined with corn syrup for the desired consistency. The ratio is 1 cup of marshmallows to 1 teaspoon corn syrup.

Melt the marshmallows and then add the corn syrup. You can add another ½ teaspoon corn syrup if the mixture isn’t smooth enough.

More Frosting Recipes to Try

We love hearing from you. If you make this marshmallow fluff frosting recipe, please leave us a comment or a star review.

Marshmallow Frosting

4.77 from 13 votes
Top your favorite cake or cupcakes with this easy Marshmallow Frosting. It is simple to make with only 5 ingredients and absolutely delicious.
Prep Time 10 minutes
Total Time 10 minutes
Servings 12
Cuisine American
Course Dessert
Calories 266


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  • Beat butter and powdered sugar until fluffy and well mixed.
  • Mix in fluff and vanilla by hand and mix well.
  • If needed mix 1-2 tablespoons milk to get to the desired consistency.
  • Add to piping bag and pipe onto cupcakes.

Recipe Notes

Marshmallow frosting: serves 12
*This makes enough for 12 cupcakes or one layer of cake

Nutrition Facts

Calories 266kcal, Carbohydrates 34g, Protein 1g, Fat 15g, Saturated Fat 10g, Trans Fat 1g, Cholesterol 41mg, Sodium 136mg, Potassium 7mg, Sugar 30g, Vitamin A 475IU, Calcium 6mg, Iron 1mg

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About the Author

Hi, I’m Carrie. Welcome to Desserts on a Dime!

I’m on a mission to help you create delicious desserts on a budget and do not require a ton of time. Together, we are going to make something sweet that the entire family will love!

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