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This easy Fluff Icing is the best frosting for your cupcakes and cakes. It only takes a few ingredients to mix this frosting together and making a tasty easy frosting.

This Homemade Marshmallow Fluff Frosting is light and airy and the perfect frosting for cookies, cakes cupcakes, and brownies. It turns your favorite chocolate dessert into something amazing.
We are big fans of homemade icing. I like that this frosting only has 5 ingredients. When you bye frosting at the store there are so many ingredients that are not necessary. We hope that you give this light and fluffy frosting a try on your next bake goods. We love it to top Peanut Butter Cupcakes before serving.
Table of Contents
Why We Love This Recipe
As most of you know, I like simple, easy recipes. When researching this Marshmallow Fluff Frosting I found that a lot recipes had unnecessary ingredients. Such as egg whites, cream of tartar and granulated sugar.
You also had to simmer water in a double boiler which is another step that is unnecessary. This delicious marshmallow creme frosting is the best! It isn’t too heavy and has the perfect amount of sweetness.
It looks gorgeous and pipes so pretty on cupcakes. Your friends and family will think you bought these treats at the bakery. The combination is tasty and so pretty!
Ingredients
- Butter – We used unsalted butter that is at room temperature
- Marshmallow Fluff – Find at the grocery store
- Powdered Sugar – Adds the perfect amount of sweetness
- Vanilla Extract – Adds warm flavors to the frosting
- Milk – This is an optional additional but helps to change the consistency
Scroll to the bottom for the full recipe in the recipe card.
Can I Add in Mix-ins?
Yes, you can. This frosting is good but adding in some mix-ins would take this frosting to a whole new level.
- Add in some toasted coconut. We love coconut and it would be great on top of a German Chocolate Cupcake.
- Chocolate Chips is a great addition to the frosting.
- Chop up with strawberries or other fresh fruit and mix into the frosting.
- I have even mixed in some peanut butter powder to the frosting to change the taste when I make chocolate cupcakes.
- To balance all the flavors, we have even added a pinch of salt.
Since this frosting is so easy to make. Invite your family and friends over for a holiday party. Have a frosting bar with different toppings. This way everyone can make their own.
How Make Homemade Marshmallow Frosting
Step 1 – Beat butter and confectioners sugar until fluffy and well mixed in a large mixing bowl. You want to make sure that there are no lumps and mixed together well.
Step 2 – Mix in fluff and teaspoon vanilla by hand and mix well. If you prefer you can use an electric mixer on low speed to medium speed with whisk attachment.
Step 3 – If needed mix 1-2 tablespoons milk to get to the desired consistency. Make sure to scrape the side of the bowl to combine the ingredients with a rubber spatula.
Step 4 – Add the mixture to piping bag and pipe onto cupcakes or spread evenly on a cake. For a delicious marshmallow buttercream frosting.
Expert Tips
- Piping Bags – We like to use piping bags and decorative bags and then toss when finish. Using piping bags makes easy to frost the cupcakes and easy cleanup.
- Stand Mixer – Use a bowl of a stand mixer to beat the powdered sugar and butter. It makes is so much easier than doing it by hand. I do recommend mixing in the marshmallow fluff and vanilla by hand.
- Icing Consistency – Remember if you frosting is to thin add more powdered sugar slowly. But if it is to thick you can thin it out with milk.
- Melted Marshmallows – Do not substitute melted marshmallows for marshmallow fluff. It will change the texture and the frosting will not set.
- Softened Butter – Always make sure the butter is fully softened. This helps it to mix well with the powdered sugar.
- Adding Milk – If you are using milk, make sure you are adding in a little at time.
- Freezing Icing – We do not recommend freezing this frosting. It works best if you use it after making it or storing in the refrigerator for a few days.
Where to find Marshmallow Fluff?
If you are having a hard time finding a jar of Marshmallow Fluff, check you baking isle at your local grocery store. If it is not there, you can use the Marshmallow Cream.
I have also found it on Amazon if you are still unable to locate it.
What Does Marshmallow Frosting Fluff Go With
- Cookies – Make some chocolate chip cookies spread the frosting on each side of the cookie and make an easy cookie sandwich. This is my kids favorite.
- Brownies – Top these Double Chocolate Chip Brownies for an amazing dessert.
- Cupcakes – These Chocolate Peanut Butter Cupcakes or S’mores Cupcakes are great frosted with this marshmallow fluff. You can also use a kitchen torch on the marshmallow frosting when making chocolate cupcakes. The toasted marshmallow will be like eating a s’more but less messy.
- Cake – This frosting is delicious to be spread on a layer cake.
- Yogurt Parfait – Use a kitchen torch to make these S’mores parfait Recipe.
- Graham Crackers are great for dipping in the marshmallow frosting. It is a great snack to have.
How to Store Marshmallow Frosting Fluff
Store you leftover Marshmallow Frosting Fluff in the refrigerator. As long as your frosting remains in a cool, it will last several days in the refrigerator. You may need to re whip after storing.
How long will Marshmallow Fluff Frosting last?
Fluff Icing is a great frosting to make ahead. It stores perfectly in the refrigerator. Since there are no egg whites, you can make this frosting several days ahead of time.
You can also go ahead and top your cupcakes and store them in the refrigerator until you are ready to serve.
Frequently Asked Questions
If you find that your frosting ends up being to thin, add in some powdered sugar. We start with about a tablespoon of powdered sugar at a time. Then stir in the additional powdered sugar if needed. You might need to add a little each time to get the consistency that you want.
This recipes makes enough to frost 12 cupcakes. Using a piping bag it should cover all 12 of your cupcakes. If you are spreading the frosting on with knife on your cupcakes, then it will probably cover more. Covering a 9×13 you will need to double to recipe. You will also need to double it if you are a frosting two 8×8 round cakes.
Yes, you can. You will mix equal parts of marshmallow fluff with a store bought frosting. It also works great if you add in some Nutella or Hazelnut to the frosting.
This works best when you are using it on chocolate frosting.
More Homemade Frosting Recipes
Easy Cupcake
How to Make Buttercream Icing
Easy Cupcake
Pumpkin Cupcakes with Cream Cheese Frosting
Easy Dessert
Nutella Frosting
We love to hear from you. If you make Marshmallow Fluff Icing Recipe, please leave us a comment or a star review.
Fluff Icing
Ingredients
- 1 cup butter room temperature
- 7 oz Marshmallow Fluff
- 2 cups powdered sugar
- 1/2 tsp vanilla extract
- 1-2 tablespoons milk optional
Instructions
- 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.
Yes, you’ll want to refrigerate this frosting after using it on cupcakes and then let the cupcakes sit at room temperature for 10-15 to soften some before serving.
Does this have to be refrigerated after I frost my cupcakes? I wonโt serve them until tomorrow, but need to get things done today.
yes, I you could.
Can this frosting be torched to look like toasted marshmallow?