Marshmallow Buttercream Frosting – A five-minute decadent frosting recipe made with just five ingredients! Rich, sweet, smooth, perfect for piping or just spreading on your favorite cake, cupcakes, brownies, and more! So EASY yet so good!

Marshmallow Buttercream Frosting - A five-minute decadent frosting recipe made with just five ingredients! Rich, sweet, smooth, perfect for piping or just spreading on your favorite cake, cupcakes, brownies, and more! So EASY yet so good!

Marshmallow Buttercream Frosting Recipe

This buttercream is rich, sweet, smooth, and soft. It’s essential in my three-layer Smores Cake and is used between the layers, around the the cake, and helps the marshmallows I pile on top to adhere better.

Smores Cake - A three layer showstopping cake that everyone will ADORE! Moist and tender layers of chocolate cake along with crunchy graham cracker crusts, sweet marshmallow buttercream frosting, toasted marshmallows, and chocolate bars for a true smores experience! So many AMAZING textures and flavors in this rich and decadent smores cake! My very detailed post walks you through making this cake in extreme detail so it's easy enough to master even for average bakers! 

It is a perfect piping frosting because it’s not so dense you can’t spread it neither so thin that it refuses to stay where you put it.

Marshmallow Buttercream Frosting - A five-minute decadent frosting recipe made with just five ingredients! Rich, sweet, smooth, perfect for piping or just spreading on your favorite cake, cupcakes, brownies, and more! So EASY yet so good!

Apart from using it in my Smores Cake, it would be be perfect on a basic yet divine Chocolate Cake, in between the layers of my three-layer Triple Chocolate Cake, or to give almost a Twinkie-esque vibe to my Yellow Cake.

It’s wonderful on top of cupcakes, brownies, or just smear it between a couple of graham crackers when you’re craving a midnight snack.

Marshmallow Buttercream Frosting - A five-minute decadent frosting recipe made with just five ingredients! Rich, sweet, smooth, perfect for piping or just spreading on your favorite cake, cupcakes, brownies, and more! So EASY yet so good!

Best of all, it’s a cinch to make and literally is a five minute recipe made with just five ingredients – the best kind! 

Marshmallow Buttercream Frosting - A five-minute decadent frosting recipe made with just five ingredients! Rich, sweet, smooth, perfect for piping or just spreading on your favorite cake, cupcakes, brownies, and more! So EASY yet so good!

Ingredients In Marshmallow Buttercream

  • Butter – This is the base and structure of this buttercream frosting.
  • Powdered sugar – This not only sweetens this frosting but it aids in the structure of it.
  • Marshmallow Fluff or Marshmallow Creme – This is what will give the buttercream its marshmallow flavor.
  • Vanilla Extract – Classic marshmallow flavor is made with vanilla so adding it to this buttercream will help enhance the flavor that the marshmallow fluff brings.
  • Salt – As with everything else, salt brings out all of the flavors present and gives balance to prevent an overly sweet taste.

Marshmallow Buttercream Frosting - A five-minute decadent frosting recipe made with just five ingredients! Rich, sweet, smooth, perfect for piping or just spreading on your favorite cake, cupcakes, brownies, and more! So EASY yet so good!

How To Make Marshmallow Buttercream

This frosting is a total cinch to make. Simply combine all the ingredients and beat for about five minutes.

Marshmallow Buttercream Frosting - A five-minute decadent frosting recipe made with just five ingredients! Rich, sweet, smooth, perfect for piping or just spreading on your favorite cake, cupcakes, brownies, and more! So EASY yet so good!

Then, put it in your piping bag fitted with a coupler and something like a round 1A piping tip and go to town.

Marshmallow Buttercream Frosting - A five-minute decadent frosting recipe made with just five ingredients! Rich, sweet, smooth, perfect for piping or just spreading on your favorite cake, cupcakes, brownies, and more! So EASY yet so good!

Alternatively, you can simply spread it on whatever cake you’re making if you’re wanting to keep things super simple.

Marshmallow Buttercream Frosting - A five-minute decadent frosting recipe made with just five ingredients! Rich, sweet, smooth, perfect for piping or just spreading on your favorite cake, cupcakes, brownies, and more! So EASY yet so good!

Tips For the Best Marshmallow Buttercream Frosting

The marshmallow buttercream will come together long before the 4 minutes I call to beat the frosting in the recipe.

Marshmallow Buttercream Frosting – A five-minute decadent frosting recipe made with just five ingredients! Rich, sweet, smooth, perfect for piping or just spreading on your favorite cake, cupcakes, brownies, and more! So EASY yet so good!

However, I advise you to continue mixing because it allows the confectioners’ sugar to melt into the butter.

Marshmallow Buttercream Frosting – A five-minute decadent frosting recipe made with just five ingredients! Rich, sweet, smooth, perfect for piping or just spreading on your favorite cake, cupcakes, brownies, and more! So EASY yet so good!

Additionally, it allows air to be whipped into the frosting which gives it a better consistency due to enhanced volume, making it more ideal for piping or frosting.

Marshmallow Buttercream Frosting - A five-minute decadent frosting recipe made with just five ingredients! Rich, sweet, smooth, perfect for piping or just spreading on your favorite cake, cupcakes, brownies, and more! So EASY yet so good!

While a stand mixer is not essential for making buttercream frosting, if you have one, now is the time to put it to use.

Marshmallow Buttercream Frosting - A five-minute decadent frosting recipe made with just five ingredients! Rich, sweet, smooth, perfect for piping or just spreading on your favorite cake, cupcakes, brownies, and more! So EASY yet so good!

If not, use a hand mixer noting you may need to beat the frosting a bit longer.

Marshmallow Buttercream Frosting - A five-minute decadent frosting recipe made with just five ingredients! Rich, sweet, smooth, perfect for piping or just spreading on your favorite cake, cupcakes, brownies, and more! So EASY yet so good!

Marshmallow Buttercream Frosting - A five-minute decadent frosting recipe made with just five ingredients! Rich, sweet, smooth, perfect for piping or just spreading on your favorite cake, cupcakes, brownies, and more! So EASY yet so good!
Yield: 4 cups

Marshmallow Buttercream Frosting

Prep Time 5 minutes
Total Time 5 minutes

Marshmallow Buttercream Frosting – A five-minute decadent frosting recipe made with just five ingredients! Rich, sweet, smooth, perfect for piping or just spreading on your favorite cake, cupcakes, brownies, and more! So EASY yet so good!

Ingredients

  • 7 cups confectioners' sugar*
  • 4 sticks (2 cups) unsalted butter, room temp
  • 3 cups Marshmallow Fluff or Marshmallow Creme
  • 3 teaspoons vanilla extract
  • 1/4 teaspoon fine salt, or to taste

Instructions

    1. To the bowl of a stand mixer fitted with either the paddle or whisk attachment (or a handheld electric mixer**) add all the ingredients, begin mixing on low speed until the confectioners' sugar starts to combine.
    2. After about 1 minute of mixing, turn speed up to medium for 30 seconds and mix before turning it up to
      high.
    3. Allow the buttercream to mix on high speed for another 4 minutes.***
    4. After it's done whipping up, use to frost cake, cupcakes, brownies, etc. by either piping it, dolloping it on, or spreading it. Frosting may be stored airtight in the fridge for up to 1 month.

Notes

*If your confectioners' sugar is on the lumpy side, I recommend sifting it to ensure a smoother final result.

**While a stand mixer is not essential, if you have one now is the time to use it. If not, use a handheld electric mixer noting you may have to whip the frosting a bit longer than the indicated times.

***The marshmallow buttercream will come together long before the 4 minutes I call to beat the frosting in the recipe. However, I advise you to continue mixing because it allows the confectioners’ sugar to melt into the butter. Additionally, it allows air to be whipped into the frosting which gives it a better consistency due to enhanced volume, making it more ideal for piping or frosting.

****The nutrition info is for the ENTIRE BATCH of frosting.

Nutrition Information:

Yield:

4 cups

Serving Size:

4 cups

Amount Per Serving: Calories: 1094Total Fat: 12gSaturated Fat: 7gTrans Fat: 0gUnsaturated Fat: 4gCholesterol: 31mgSodium: 286mgCarbohydrates: 252gFiber: 0gSugar: 231gProtein: 1g

The nutrition info is for the ENTIRE BATCH of frosting.

Related Recipes:

Homemade Marshmallows – Easier than you think to make and the results are so WORTH IT! Chewy, sticky, bouncy, soft yet firm, and they blow store bought marshmallows away! Learn how to make marshmallows at home with my straightforward and simple recipe! 

Homemade Marshmallows - Easier than you think to make and the results are so WORTH IT! Chewy, sticky, bouncy, soft yet firm, and they blow store bought marshmallows away! Learn how to make marshmallows at home with my straightforward and simple recipe! 

Smores Cake – A three layer showstopping cake that everyone will ADORE! Moist and tender layers of chocolate cake along with crunchy graham cracker crusts, sweet marshmallow buttercream frosting, toasted marshmallows, and chocolate bars for a true smores experience! So many AMAZING textures and flavors in this rich and decadent smores cake! My very detailed post walks you through making this cake in extreme detail so it’s easy enough to master even for average bakers! 

Smores Cake - A three layer showstopping cake that everyone will ADORE! Moist and tender layers of chocolate cake along with crunchy graham cracker crusts, sweet marshmallow buttercream frosting, toasted marshmallows, and chocolate bars for a true smores experience! So many AMAZING textures and flavors in this rich and decadent smores cake! My very detailed post walks you through making this cake in extreme detail so it's easy enough to master even for average bakers! 

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