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Marshmallow Frosting is one of our favorite easy frostings when we want something sweet, fluffy, and fun for cupcakes. It has that creamy marshmallow flavor from Marshmallow Fluff, plus butter, powdered sugar, and vanilla to make it smooth and pipeable.
We love using this on chocolate cupcakes, vanilla cupcakes, s’mores desserts and birthday treats. It’s simple to mix together, easy to pipe, and gives any dessert that sweet marshmallow finish kids and adults love.
We’ve made this frosting countless times because it is fast, dependable, and uses ingredients we often have on hand. If you love this recipe, be sure to try Chocolate Buttercream Frosting, Cinnamon Cream Cheese Frosting, Vanilla Buttercream Frosting, and Sugar Cookie Frosting too.
Why you’ll love it + Why it works:
- Only Four Ingredients: This frosting comes together with simple ingredients you may already have in your kitchen.
- Ready in Minutes: It takes just a few minutes to mix up, making it perfect for busy baking days.
- Perfect for Piping: The texture is smooth and fluffy, making it great for decorating cupcakes and cakes.
- Balanced Sweetness: Butter helps balance the sweetness for a frosting that is rich without being overwhelming.
Marshmallow Frosting Ingredients
- Butter (½ cup, room temperature): Creates a rich, creamy base and helps give the frosting structure. Be sure the butter is softened so it mixes smoothly.
- Marshmallow Fluff (7 ounces): Adds the signature marshmallow flavor and creates the light, fluffy texture that makes this frosting so good.
- Powdered Sugar (1 cup): Sweetens the frosting while helping it hold its shape for spreading and piping.
- Vanilla Extract (1 teaspoon): Adds warm flavor and enhances the sweetness of the marshmallow.
How to Make Easy Marshmallow Frosting
COMBINE. Beat butter and powdered sugar until fluffy and well mixed. Mix in fluff and vanilla by hand and mix well.
PIPE. Add to a piping bag and pipe onto cupcakes.
Kristyn’s Recipe Tips
- Let the butter come fully to room temperature for the smoothest frosting.
- Sift the powdered sugar if it has lumps to ensure a silky texture.
- Avoid overmixing after adding the Marshmallow Fluff to help maintain a light, fluffy consistency.
- If the frosting feels too soft for piping, chill it for 15 to 20 minutes before decorating.
Marshmallow Frosting Recipe
Video
Ingredients
- ½ cup butter, room temperature
- 7 ounces Marshmallow Fluff
- 1 cup powdered sugar
- 1 teaspoon vanilla extract
Instructions
- Beat butter and powdered sugar until fluffy and well mixed.
- Mix in fluff and vanilla by hand and mix well.
- If the frosting feels too soft for piping, chill it for 15 to 20 minutes before decorating.
- Then add frosting to piping bag and pipe onto cupcakes.
Notes
- Let the butter come fully to room temperature for the smoothest frosting.
- Sift the powdered sugar if it has lumps to ensure a silky texture.
- Avoid overmixing after adding the Marshmallow Fluff to help maintain a light, fluffy consistency.
- If the frosting feels too soft for piping, chill it for 15 to 20 minutes before decorating.
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
Recipe FAQ
Store leftover frosting in an airtight container in the refrigerator for up to 5 days. Freeze the frosting in a freezer-safe container for up to 2 months. Thaw overnight in the refrigerator and stir before using.
Make it in advance and store it in the fridge for several days before using. As long as it is kept cool, it will stay in good condition.
You can even frost your cupcakes a day or two in advance, and keep in the fridge until you’re ready to serve.
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This recipe was first shared in August, 2012.
I want to make this frosting for my sons Bay Max bday cake. If I only have marshmallow creme would you recommend adding a egg white or two or does the creme work out okay?
This is my new ‘favorite’ frosting. Thanks so much for sharing!
I had a large container of marshmallow fluff and added much more than 7 oz., I think. So delicious!
Glad you liked it!! Thanks for stopping by. 😉
how much does this make?
I also was wondering if it should be refrigerated. It oozed slowly down the sides of my cupcakes.
Does this frosting need to be refrigerated? I made a double batch and have a little left over. I want to frost more cupcakes tomorrow and am wondering. I love this frosting! I’ve used it twice now with great results. I used Creme one time and Fluff one time, and both worked great. A 10-year old girl at my daughter’s party today loved the frosting so much she asked if she could have another cupcake. 🙂
Kristyn this marshmallow frosting is awesome, I’ll definitely make it again !!!! I used it for brownies I wanted to decorate with Peeps & jelly beans for Easter and I don’t like sweet frosting and never frost my brownies. This worked out great and is very easy to make, not saving the other recipes I found that would take a bit more time.
I made this marshmallow icing according to the instructions with 1 cup of butter despite thinking it was way too much butter and unfortunately it was. The icing was not very good. I checked some other marshmallow recipies such as Kraft and they call for 1/4 cup of butter instead. Perhaps it is a misprint.
Can you make this with dairy free “butter”? We use Earth Balance because my son is allergic to dairy and I’m trying to find a dairy free icing recipe that actually tastes good.
Unfortunately, I’ve never tried. If you do give it a try let me know how it goes so I can let others know. 🙂
Did you try the eArth Balance? If so, how did it taste? I was asked to make a birthday cake-dairy free and I was hoping to use a marshmallow frosting.
Thanks,
Joan
Is this also good on a very humid day. I know I will love this. I am a marshmallow freak!
Unfortunately, I’ve never tried making it on a humid day. :/ I’d imagine it would be okay but may need a bit more powdered sugar to make it more stiff. 🙂