Marshmallow Buttercream Frosting with Marshmallows- Creamy buttercream frosting made with real marshmallows..no fluff required! It’s the perfect topping for your favorite cupcakes or cake.


Fun fact: I stink at spelling. If it wasn’t for spell check ( and my husband), my blogs would be a mess of all kinds of grammatical errors.
For example: One of my early posts over at Table for Seven included marshmallows. I kid you not, I spelled marshmallow wrong in the title of the post. That’s not the sad part. I didn’t even realize it until about a year later, when I was correcting something else that was in the post. 😳
I have gotten better. OK, not really. But, my husband edits all my posts now and will catch stuff before it goes public or really soon after. 😉
Speaking of marshmallows, there are some in this frosting and it’s fabulous.
Why do I specify there are marshmallows in a marshmallow buttercream frosting? Many of the marshmallow buttercream frosting recipes online call for marshmallow fluff/creme. Not this one. We are using actual marshmallows.
Ingredients Needed
- Marshmallows
- Butter
- Butter Flavored Shortening
- Vanilla
- Powdered Sugar
- Milk
Ingredients Notes
Marshmallows: I used 2 cups of large marshmallows, because, honestly, it is what I had on hand. Mini marshmallows will also work.
Butter Flavored Shortening: I like to use Crisco butter flavored baking sticks in my frosting. Regular shortening will also work.
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How to Make
- First, melt your marshmallows with the milk. I like to do this in a saucepan over medium heat. However, you can do this in the microwave. If you use the microwave, melt them in 30 second intervals. This will help prevent burning. If you do choose the stove top method, stir those marshmallows frequently! Again, prevent burning.
- Let them sit for 5-10 minutes to cool.
- While they are cooling, beat the butter and shortening. Make sure they are room temperature. This helps give the frosting it’s creamy texture.
- Then, add in melted marshmallow and vanilla. Beat it well.
- Gradually, add in your powdered sugar. Adding it gradually will be easier for you to check the consistency of the frosting. Plus, it’s much less messy. Start with 2 cups and if needed, add 1/2 cup gradually until the frosting has reached your desired consistency.
Storage
- Keep your leftover frosting in the refrigerator in a covered container. When you use your leftover frosting, let it come to room temperature before using. It will stay good in the fridge for about 2 weeks.

Frost it on
Used in this Recipe
- 1 M Piping Tip
- Silicone piping bags
- Duncan Hines Signature Perfectly Moist Triple Chocolate Cake Mix
linking up and weekend potluck
Marshmallow Buttercream Frosting with Marshmallows

Marshmallow Buttercream Frosting with Marshmallows- Creamy buttercream frosting made with real marshmallows..no fluff required! It's the perfect topping for your favorite cupcakes or cake.
Ingredients
- 2 cups large marshmallows ( about 18 large marshmallows)
- 1/2 cup butter, softened
- 1/2 cup shortening
- 1 TBSP milk
- 1 tsp vanilla
- 2-2 1/2 cups powdered sugar
Instructions
- In a saucepan over medium heat, melt marshmallows with milk. Stirring frequently, continue until mixture is completely melted and smooth. Set aside to cool for about 5 minutes.
- In a mixing bowl, beat butter and shortening until creamy. Add in vanilla and cooled/melted marshmallows. Beat to combine.
- Gradually add in 2 cups of powdered sugar and beat until creamy. If needed, add up to another 1/2 cup of powdered sugar, until desired consistency is reached.
- Keep any leftovers in a covered container in refrigerator. When using leftovers from the refrigerator, let the frosting come to room temperature before using.
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Nutrition Information:
Yield:
2 cupsServing Size:
1Amount Per Serving: Calories: 2107Total Fat: 98gSaturated Fat: 50gTrans Fat: 2gUnsaturated Fat: 42gCholesterol: 151mgSodium: 415mgCarbohydrates: 316gFiber: 0gSugar: 298gProtein: 2g
All information and tools presented and written within this site are intended for informational purposes only. I am not a certified nutritionist and any nutritional information on abiggreenhouse.com should only be used as a general guideline. This information is provided as a courtesy and there is no guarantee that the information will be completely accurate
Susan Skylark
Saturday 12th of November 2022
What a great idea! I needed a filling for a Swiss cake roll type cake and I think the marshmallow will give it the right texture, taste, and be a little more sturdy than your average buttercream when chilled. I made a half recipe with plant butter but doubled the marshmallows and it turned out perfectly.
Erin/Big Green House
Monday 14th of November 2022
So glad you liked it Susan...thanks for the feedback!
Grace
Tuesday 11th of October 2022
Can this buttercream be used for macaron filling and can i put in freezer
Erin/Big Green House
Wednesday 12th of October 2022
Hi Grace- Yes it can be used in a filling for the cookies and yes, you can put it in the freezer. Just be sure to store it in an air tight covered container/storage bag.
Luci
Tuesday 15th of February 2022
Could you sub all butter instead of butter crisco, as in buttercream frosting or would it be too soft? The crisco is a little more stiff than butter, though I love both! Thanks!
Erin
Sunday 20th of February 2022
Hi Luci! You could, but, the consistency may be softer.
Celeste
Saturday 5th of February 2022
I have never commented on a recipe blog before, but I wanted to let you know how much I appreciate this recipe! I thought about a marshmallow icing for a birthday cake because I had accidentally received a double order of two sizes of marshmallows... so I have a lot on hand! Like you said, most recipes don't call for actual marshmallows. So thank you!
Erin
Saturday 5th of February 2022
Thanks for letting me know Celeste! So glad you enjoyed it :)
Eileen
Monday 27th of September 2021
Hello! Can this marshmallow frosting be toasted?
Erin
Tuesday 28th of September 2021
Hi Eileen- Honestly, I can't say for certain, I have never tried to. If you give it a try, please let me know how it works out. Sorry!