This post may contain affiliate links. Please read our disclosure policy.
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.
More Like This
Frosting Recipe
Berry Buttercream Frosting
10 mins
Chocolate Chip Frosting
5 mins
Strawberry Frosting
5 mins
Caramel Frosting Recipe
15 mins
Collections
This recipe was first shared in August, 2012.
Wondering if I could switch out the vanilla for lemon?
You sure could 🙂 Hope you like it!
Super fast and easy! Thank U
I am glad you think so 🙂 Thank you for letting me know!
I love this recIpe and have used it several times! I am needing to flavor it chocolate…any suggestions how to do that??
I haven’t tried, but maybe some cocoa powder would do it! I’d have to play around with the recipe.
Homemade Marshmallow is THE BEST! Making these for a Valentine treat this weekend! My kids are going to love them!
I love how light & airy this frosting is! Had it on brownies & it was so good!!
I have made a meringue frosting on the past for s’mores cupcakes and wasn’t sold on the taste. I tried this recipe out for a birthday party last weekend and it tasted wonderful, however I only gave three stars because I was unable to brulee without melting (even at high flame close to the frosting) and I just heard back that even in their house (around 70 degrees f) the frosting began melting off before the party and they have to refrigerate them until it was time to eat them.
Thank you for trying them!
The perfect frosting for your cupcakes. Quick to make and pipes On really niceLy.
I Love how fluffy this looks on top of the cupcake and of course the MARSHMALLOW taste is DELICIOUS.
This is my go to frosting, it goes with almost everything!
I LOVE HOW EASY AND SIMPLE THIS IS TO MAKE! I’D EAT IT WITH A SPOON!