Marshmallow Vanilla Buttercream Frosting

This Marshmallow Vanilla Buttercream Frosting is the perfect icing for either chocolate or vanilla cupcakes!

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Marshmallow Vanilla Buttercream Frosting {A Pretty Life}

It seems to me that people are either icing on or icing off kind of people.  Are you an icing person?  I like icing, but I really just prefer cake and cupcakes naked.  Unless there is some kind of marshmallow involved (or that white icing you get on cakes in the grocery store…I don’t know what it is about that kind of icing but I love it).  But a marshmallow frosting?  Sign me up.

Marshmallow Vanilla Buttercream Frosting {A Pretty Life}

On the weekend I made chocolate cupcakes and was trying to decide what kind of frosting to ice them with.  As I pulled out the recipe card for my tried and true vanilla buttercream I wondered what it would taste like with marshmallow added.  Marshmallow makes everything delicious don’t you think?  Well it certainly made this frosting ah-mazing.

Marshmallow Vanilla Buttercream Frosting {A Pretty Life}

It’s so fluffy and creamy and soft and vanilla-y and perfectly marshmallowy!  And divine on chocolate cupcakes.  You need to try it.



Marshmallow Vanilla Buttercream Frosting

Yields Will ice 12 - 16 cupcakes (thickly), or 24 cupcakes if spread more thin.


  • 3/4 cup unsalted butter
  • 2 cups icing sugar confectioners sugar
  • 1 - 3 tsp heavy cream
  • 1 tsp vanilla
  • 1 - 198 g container of Marshmallow fluff
  • salt to taste optional


  1. Sift the icing sugar (confectioners sugar). Set aside.
  2. In a mixer, beat the butter until soft and fluffy. You'll have to scrape the sides of the bowl several times. This process of getting fluffy butter takes at least 10 minutes.
  3. Add the sifted icing sugar, and mix until smooth.
  4. Add the vanilla and heavy cream and beat until smooth.
  5. Beat in the marshmallow fluff until smooth.
  6. Decorate your cupcakes and enjoy!

Recipe Notes

I used a Wilton 1M icing tip for the icing roses.


Marshmallow Vanilla Buttercream Frosting {A Pretty Life}

If you want to try another delicious frosting recipe, I’m sharing a recipe for Chocolate Cupcakes with Chardonnay Buttercream Frosting over on the Kendall-Jackson blog today!  Pop on over to get the recipe!

Chocolate Cupcakes with Chardonnay Buttercream Frosting

Have a delicious day!


This post was generously sponsored by Kendall-Jackson wines.  But as always the voice, all content, and opinions are mine alone.

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  • Reply La Cuisine d'Helene February 12, 2016 at 6:42 PM

    I never made frosting with marshmallow fluff before, what a great idea!

    • Reply Jo-Anna@APrettyLife February 13, 2016 at 8:06 PM

      Thank you! I love marshmallow fluff so I knew it would be delicious in a frosting!

  • Reply MDIVADOMESTICA February 12, 2016 at 7:31 PM

    This is definitely on my must try list! Sounds like a yummy excuse to whip up a batch of cupcakes.

  • Reply Gloria @ Homemade & Yummy February 12, 2016 at 7:37 PM

    That frosting looks perfect. Makes cupcakes shine for sure!!

  • Reply Amanda | The Cinnamon Scrolls February 13, 2016 at 7:25 PM

    Ohmygosh, YUM! I love marshmallow frosting! Yours looks simply perfect! Good idea to toss it in at the last minute. Love it when that happens!

    • Reply Jo-Anna@APrettyLife February 13, 2016 at 8:07 PM

      Thank you Amanda! Marshmallow makes almost everything taste better! 😉

  • Reply Shareba @ In Search Of Yummy-ness March 5, 2016 at 12:06 PM

    These look so professional! They are gorgeous!

  • Reply Janice March 26, 2016 at 10:46 AM

    It’s so important to build up a repertoire of pipable (is that a word?) frostings because you never know when you need to make an impromptu, spontaneous cake, and there’s no time for recipe testing in those moments. Anyways, this frosting is beautiful, as is your piping!

    • Reply Jo-Anna@APrettyLife March 30, 2016 at 9:06 AM

      Thank you Janice! I have so much to learn about piping, but these were a good start!

  • Reply Tonee June 17, 2016 at 4:56 PM

    Will it crust at all?

  • Reply Jen July 3, 2016 at 1:57 PM

    Does the butter need to be room temp or cold?

  • Reply brianne cruickshank August 20, 2016 at 10:23 PM

    How would this hold up on a wedding cake? Is it overly sweet or a nice sweetness like a mccains cake. Those chocolate store bought delights, i’m not sure what the frosting is made of but i always feel it is a little marshmallowy!

    • Reply Jo-Anna@APrettyLife August 22, 2016 at 7:21 PM

      I’m not really sure if it would make a good wedding cake frosting, as I don’t think it would hold up that well. I think it’s really better as a birthday cake frosting.

  • Reply Jenn October 2, 2016 at 10:19 PM

    Just wondering if you could make the frosting a day in advance? And would you then refrigerate overnight then let come to room temperature before frosting the cupcakes? Thanks! Would like to try for my daughters bday this weekend.

    • Reply Jo-Anna@APrettyLife October 3, 2016 at 12:58 PM

      Hi Jenn! I think it would be just fine if you made it in advance. As you mentioned, just bring it up to room temperature, and if it seems a bit thick, just stir in a little extra cream. Enjoy!

  • Reply Ohmy! October 17, 2016 at 10:32 AM

    Does this icing crust? Can I use it to ice a cake smooth? Would it hold up and not melt off the cake? Thank you!

    • Reply Jo-Anna@APrettyLife October 17, 2016 at 12:24 PM

      Hi! It does crust like regular buttercream icing. And I haven’t had any problems with it melting off the cake, just as long as you wait for the cake to cool completely before icing it. Enjoy

  • Reply Aarti October 20, 2016 at 6:24 PM

    Ok those look amazing ?

  • Reply Nancy October 29, 2016 at 1:54 PM

    What is the conversion of the 198g of the marshmallow fluff , in cups or like 7 1,2 oz

    • Reply Becky Miller November 3, 2016 at 10:06 AM

      A small container of Kraft Jet-Puffed is 7 oz. or 198g. I’m making german chocolate cupcakes today and will be using this recipe. I can’t wait to taste them!

  • Reply Elaine December 4, 2016 at 4:15 PM

    Hi what is marshmallow fluff please

  • Reply Melissa December 15, 2016 at 12:58 PM

    Would you be able to use food colouring with this?

  • Reply Denise Wangerin December 16, 2016 at 9:13 PM

    would this work for sugar cookies?

    • Reply Jo-Anna@APrettyLife December 19, 2016 at 11:24 AM

      Hi Denise! I’m not sure…this is quite a soft frosting. It may be too soft.

  • Reply Rebecca December 18, 2016 at 12:17 PM

    Do you think I could make it Chocolate by adding Cocoa powder?

    • Reply Jo-Anna@APrettyLife December 19, 2016 at 11:26 AM

      Hi Rebecca! I think it would work just fine! I would start with 2 – 3 tbsp of cocoa powder, then add more if you feel it needs it!

  • Reply Sarah January 5, 2017 at 4:21 PM

    Omg I tried this today to frost a b-day cake. The frosting came out perfect, the butter just melted and it isn’t too sweet. Thank you for my new go to recipe!

    • Reply Jo-Anna@APrettyLife January 5, 2017 at 10:25 PM

      Oh that is wonderful to hear! It’s my go-to recipe as well…SO delicious!

  • Reply Karen January 12, 2017 at 2:55 PM

    Hi I was just curious how long this frosting will last like what’s the shelf life. And also does it have to be refrigerated after you Frost the cupcakes or can they stay in a sealed container on the counter

    • Reply Jo-Anna@APrettyLife January 19, 2017 at 1:57 PM

      Hi Karen! Sorry I missed your message! I think this frosting would last at least a week in the fridge. For the frosted cupcakes, I always leave mine on the counter for a day or so. Any longer and I would put them in the fridge.

  • Reply Patricia murillo January 19, 2017 at 1:15 PM

    I am wondering if I can just melt my marshmallow since I have so many bags . And used it will have the same consistence or will change it.

    • Reply Jo-Anna@APrettyLife January 19, 2017 at 1:58 PM

      Hi Patricia! I’m not sure. I thought about doing this as well, and I think it likely would be fine as long as you didn’t completely melt the marshmallows. Just melt them slightly… just enough to make the consistency the same as marshmallow fluff. If you try it, let me know how it turns out!

  • Reply Ariel January 27, 2017 at 7:26 PM

    Do you have to use the heavy cream? I’ve seen recipes without and I have a husband with dairy issues!

    • Reply Jo-Anna@APrettyLife January 29, 2017 at 4:17 PM

      Hi Ariel! I don’t see why you couldn’t try a substitute that works for you!

  • Reply Abby February 4, 2017 at 4:21 PM

    I just tested this recipe for my son’s 3rd birthday cake in march… wow! So good and easy! It almost tastes like a Swiss buttercream, but without all the extra work of cooking the egg whites and sugar! Totally the winner for the cake!

  • Reply Sandra February 11, 2017 at 6:38 PM

    Hi, I am looking for a new frosting for my coconut cakes. I normally make the 7 minute frosting…..egg whites, sugar. corn syrup, water,,,,etc,, but it does not lost long, 3 days max, before it starts ‘breaking down’. Do you think this would be a good substitute? I really think I should give it a try.

  • Reply Mette February 18, 2017 at 5:49 AM

    Hi, this recipe sounds wonderful! I want to make a square cake with fondant on sides and piped frosting on top. Do you think I can use this frosting to attach fondant with/seal the cake with? Or would the marshmellow fluff melt the fondant! Now the other issue us if I can find fluff here in Copenhagen!

  • Reply Nicole February 27, 2017 at 11:32 PM

    Could you make this frosting without the marshmallow fluff?

    • Reply Jo-Anna@APrettyLife March 1, 2017 at 11:47 AM

      Hi Nicole! Well this is a Marshmallow frosting, but it sounds like maybe what you’re looking for is a vanilla buttercream recipe?

  • Reply Katie March 6, 2017 at 7:09 PM

    Hello! I was wondering if the actual fluff brand would make it taste different from the cream? I tried it with fluff and couldn’t taste the marshmallow.

    • Reply Jo-Anna@APrettyLife March 11, 2017 at 7:09 PM

      Hi Katie! Maybe? Some brands do taste more marshmallowy than others.

  • Reply Cheryl Brewer March 14, 2017 at 9:50 PM

    Hi! I am pretty sure this is exactly what I am looking for. I have a couple questions tho. I want to make a three layer birthday cake. The cake won’t last long past the happy birthday song and blowing out candles. Do you think this would work or would the layers slide? Does the outside harden at all?


    • Reply Jo-Anna@APrettyLife March 15, 2017 at 4:43 PM

      Hi Cheryl! This frosting is quite thick, so it should be fine, with no sliding. It’s like a regular buttercream, so after some time in the air it will harden a bit…you could lightly wrap it with saran wrap to keep it moist.

  • Reply Kris March 21, 2017 at 6:28 PM

    How do you think this would taste on a lemon cupcake with raspberry filling?

  • Reply Emma March 26, 2017 at 9:28 PM

    hi! i want to make a 1/2 birthday cake (6 months) so i am going to make a 9 inch round cake and then cut it in half and stack those two halves. so i am going to need to fill between the layers and then cover the tops and sides. do you think one recipe would be enough or should i double?

    • Reply Jo-Anna@APrettyLife March 27, 2017 at 1:00 PM

      Hi Emma! I think you may need more than just the single batch recipe…even doing the recipe half more might work!

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