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Perfect Party Frosting

My Perfect Party Frosting is the ultimate sweet finish to any type of cake!

Perfect Party Frosting with sprinkles mixed into it.

So I am pretty sure I am an expert on frosting. Some people have more useful talents, I suppose, but frosting happens to be mine.

Trust me, it’s taken many years to be sure it’s safe to use the word “expert”. But after many painstaking hours of taste-testing….many corner pieces consumed…I am officially official.

An official expert. At frosting…or rather at eating frosting. And to be able to eat all the frostings, I have had to make a whole heck of a lot of them too. Which brings me to today, and this Perfect Party Frosting.

It’s actually a version of the Marshmallow Buttercream Frosting I have in my book. Wait, you didn’t know I had a book? With a whole chapter dedicated to frosting? Go get you a copy quick!

The secret ingredient in this one is Marshmallow Fluff! It gives the frosting a great texture and consistency…you mix that together with butter, powdered sugar and a little bit of vanilla…

Perfect Party Frosting. My favorite frosting to use on any celebration cake!

Then of course to make it party frosting you have to add sprinkles!!

Perfect Party Frosting. My favorite frosting to use on any celebration cake!

Mix that all together and you’re set!

It’s so easy and I guarantee you will love it. You can certianly dig in with a spoon or cover your favorite cake with this creamy party frosting!

WACKY CAKE! This is an egg and dairy free cake recipe (without the frosting). You make it right in the cake pan, so NO MESS! You don't even grease the cake pan!

I’m going to be using this on a cake recipe next week that you won’t want to miss!!

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Marshmallow frosting with colorful sprinkles mixed in.

Perfect Party Frosting

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.7 from 7 reviews
  • Author: Cookies & Cups
  • Prep Time: 5 minutes
  • Total Time: 5 minutes
  • Yield: approximately 4 cups 1x
  • Category: Dessert
  • Method: No Bake
  • Cuisine: American


My Perfect Party Frosting is the ultimate sweet finish to any type of cake! Careful, though, this marshmallow buttercream frosting with sprinkles is pretty addicting!


  • 1 cup salted butter, room temperature
  • 14 ounces Marshmallow Fluff
  • 2 cups powdered sugar
  • 1 teaspoon vanilla
  • 1/2 cup sprinkles


  1. In the bowl of your stand mixer fitted with the paddle attachment, mix the butter on medium speed until smooth. Add in the Marshmallow Fluff and mix for an additional minute, or until smooth, scraping the sides of the bowl as necessary.
  2. Turn the mixer to low and add in the powdered sugar and vanilla, mixing until combined, then turn the mixer up to medium and mix for another minute.
  3. Add in the sprinkles and mix until evenly incorporated.


Use immediately, or store airtight in the refrigerator for up to 5 days or in the freezer for up to a month. Bring back to room temperature before frosting.

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Marshmallow Conversions!! Measuring marshmallows made easy!

AND as a bonus I wrote THIS whole post a few years ago all about marshmallows and marshmallow fluff/creme. So you will easily be able to measure out your fluff for this recipe!

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38 comments on “Perfect Party Frosting”

  1. I’m hoping you can help us! We’ve made this frosting twice and both times it’s been very soupy and not at all fluffy or frosting like. Have you ever seen that happen? Is it really 14 oz of marshmallow cream?

    1. That’s very strange it’s soupy! I have never had anything like that happen and I make this all the time. Is your butter too soft? But if ever this happens with this and most frosting recipes you can easily add more powdered sugar until the desired consistency is achieved.

    2. I’ve had this happen to me before. Use Jet Puffed brand (they’re 7 oz each, so buy 2) and buy it new the same day or the day before you need to frost. I’ve bought the marshmallow cream thinking I’ll make cupcakes soon. I keep it in my pantry and it sits for a while because I haven’t made my cakes yet, so eventually they get old and form this yellow gooey substance at the bottom of the jar, like a gel. I’ve opened some that are close to expiring and made this frosting only to have it runny because the marshmallow cream is starting to form this mush. Even if I don’t scoop the gel at the bottom and use just the cream, it still turns out soupy. So try to use cream as fresh and new as possible. I haven’t tried the Fluff or any other brand, though, so those could have a different consistency.

  2. Made this for my daughter’s birthday cake and ate the leftover frosting with pretzels (the flat ones are best for dipping ). So delicious!

  3. Just had to come back on here and say this is still my favorite frosting!! It’s always a hit and people love that it’s not too sweet. They are always trying to guess that secret ingredient that makes them go hmmm (it’s the marshmallow fluff, of course!). Goes perfect with any cake, but I always love piping it onto my chocolate cupcakes. I could eat this stuff by the spoon, it’s that good!! So delicious!!

  4. I know it says 4 cups but I am terrible at estimating…about how many cupcakes would this frost? Thanks!

  5. Just made this today with chocolate cupcakes for a meeting at work for Nurses Week. It was such a hit! They cleaned me out good and I ended up coming home with nothing! So good, I’m making it again tomorrow! Pipes like a dream!! It was enough to frost 2.5 dozen cupcakes using a star tip.

  6. If I frost the cake the day ahead can I just let this sit out? Or does it all need to be refrigerated after?

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