Strawberry Marshmallow Buttercream Frosting recipe! Luxuriously creamy and bursting with the sweet, tangy taste of strawberries, this frosting is the perfect blend of buttery goodness and fluffy marshmallow.
My Strawberry Marshmallow Buttercream Frosting is a delicious twist on the classic Russian or Condensed Milk Buttercream. It has the creamy richness of buttercream combined with the light, airy touch of marshmallow, all infused with just a hint of the sweetness of strawberries.

Why You'll Love My Strawberry Marshmallow Buttercream Frosting
You're really going to enjoy making this Strawberry Marshmallow Buttercream Frosting, and here's why. First, it's incredibly easy to put together. Additionally, it tastes delicious. Not much more to day there! It combines the creamy richness of buttercream and the fluffy lightness of marshmallow. It's a fun way to elevate your cakes or cupcakes, adding a touch of gourmet flair. Also, this frosting isn't just delicious; it's versatile. Use it on a variety of desserts, or even indulge in a spoonful by itself. Once you try it, you'll see how it brings a special twist to your baking creations.
Ingredients In My Strawberry Marshmallow Buttercream
- Unsalted Butter: This is the base of the frosting, providing a creamy texture and rich flavor. Unsalted butter is used so you can control the amount of salt in the recipe. It needs to be softened to blend well with other ingredients.
- Sweetened Condensed Milk: This adds sweetness and a smooth texture to the frosting. It also helps in stabilizing the frosting and giving it a nice, spreadable consistency.
- Marshmallow Fluff: This is a key ingredient that gives the frosting its unique marshmallow flavor and airy, fluffy texture. It's a pre-made marshmallow cream.
- Food Coloring (Optional): This is used to add color to the frosting. You can choose red or pink to enhance the strawberry look, but it's entirely optional and depends on how you want your frosting to look.
Each ingredient plays an important role in creating the overall flavor and texture of the frosting. The butter and condensed milk create a rich, creamy base, while the marshmallow fluff adds a unique lightness and sweetness, and the optional food coloring can enhance the visual appeal.
How To Make My Strawberry Marshmallow Buttercream
Prep the Butter: Begin by placing unsalted butter in a large mixing bowl. It's important that the butter is softened to room temperature for easy beating. Use an electric mixer or a stand mixer to beat the butter. Aim for a light and fluffy texture, which typically takes about 3 to 5 minutes. This step is crucial for a smooth frosting base.

Incorporate Condensed Milk: Once the butter is fluffy, pour in the sweetened condensed milk. Continue mixing with your electric or stand mixer. Mix thoroughly for another 2 to 3 minutes. The goal is to fully combine the butter and condensed milk into a homogenous mixture. Periodically scrape down the sides and bottom of the bowl with a spatula to ensure an even blend.

Add Marshmallow Fluff: Now, add the marshmallow fluff to your mixture. Blend it in until it's completely integrated. This step is key for adding that unique marshmallow sweetness and fluffy texture to your frosting. Mix until the marshmallow fluff is evenly distributed throughout the frosting.

If you've chosen to use food coloring, this is when you'll add it. Add a few drops at a time, mixing after each addition, until you reach your desired color. Red or pink work well for a strawberry look, but feel free to get creative.
Final Mixing and Smoothing: With a silicone spatula, give the frosting a final mix. This helps to smooth out the frosting and remove any large air bubbles. A couple of minutes should be sufficient to achieve a consistent, creamy texture.
Frosting Ready to Use:

Your Strawberry Marshmallow Buttercream Frosting is now prepared and ready to use. Whether you’re piping it onto cupcakes or spreading it over a cake, this frosting will add a creamy, fluffy, and strawberry-infused layer to your desserts. The 1M Piping Tip works really well with this buttercream frosting.

My Top Tip
The most important tip for you to remember when making Strawberry Marshmallow Buttercream Frosting is to make sure your butter is properly softened. It needs to be at room temperature, soft enough to blend smoothly, but not melted. This step is crucial because the texture of your butter directly impacts the consistency and smoothness of your frosting.
When your butter is just right – soft and pliable – it will whip up light and fluffy, creating an ideal base to mix in the sweetened condensed milk and marshmallow fluff evenly. If the butter is too hard, you might end up with a lumpy frosting, and if it's melted, your frosting could turn out too runny. Getting the butter consistency right is the key to achieving a creamy, smooth, and perfectly whipped frosting for your delicious treats.
Serving Suggestions
You've got a batch of this delightful Strawberry Marshmallow Buttercream Frosting, so now let's think about some creative ways you can use it. This frosting isn't just for cakes and cupcakes – although it's fantastic for those.
- Sandwich Cookies Filling: Why not try it as a filling for sandwich cookies? Just spread a generous amount between two cookies for a sweet, creamy treat.
- Dessert Topping: You can also use it as a topping for brownies or bars. Imagine a layer of this fluffy frosting on top of a rich, chocolatey brownie.
- Fruit Dip: Consider using it as a dip for fresh fruit. Strawberries, apple slices, or grapes dipped in this frosting make a fun and somewhat indulgent snack.
- Doughnut Filling: If you're feeling adventurous, you could use it to fill homemade doughnuts. A strawberry marshmallow-filled doughnut sounds pretty amazing, doesn't it?
- Pastry Cream Alternative: Use it as an alternative to pastry cream in desserts like éclairs or cream puffs for a unique twist.
- Layered Parfaits: For a simple yet elegant dessert, layer this frosting with crushed cookies and fresh fruit to create parfaits.
- Pancake or Waffle Topping: Swap out your regular syrup for this frosting on pancakes or waffles for a special breakfast treat.
Remember, this frosting is quite rich and sweet, so a little goes a long way. Whatever you choose to do with it, enjoy the process and the delicious results of your culinary creativity!
Common Questions
Absolutely! You can make this frosting in advance and store it in the refrigerator for up to a week. Just bring it to room temperature and give it a quick mix before using.
Store any leftovers in an airtight container in the fridge for up to a week or in the freezer for up to two months. Thaw in the fridge overnight and let it come to room temperature before re-whipping and using.
Marshmallow fluff is unique in texture and flavor, so it's hard to find a direct substitute. However, you can try homemade marshmallow cream.
Since the sweetness comes mainly from the condensed milk and marshmallow fluff, reducing the sweetness is challenging. However, adding a pinch of salt can help balance the sweetness.
Yes, this frosting is great for piping. It holds its shape well and is perfect for decorating cakes and cupcakes.
Yes, food coloring can be added to achieve your desired color. Gel food coloring is recommended as it's more concentrated and won't affect the frosting's consistency.
Absolutely! Feel free to experiment with other fruit flavors by using different fruit-flavored marshmallow fluffs or adding fruit extracts.
Strawberry Marshmallow Buttercream Frosting (Russian/Condensed Milk Buttercream)
INGREDIENTS
- 500 g (2 ⅕ cups) butter unsalted and softened
- 395 g (1 2/7 cups) sweetened condensed milk
- 213g (7 ½ oz) marshmallow fluff strawberry
- 3 drops (3 drops) red food colour
INSTRUCTIONS
- Butter Beating: Begin by adding softened unsalted butter to a mixing bowl. Beat it for 3-5 minutes until it becomes light and fluffy. This step is crucial for a smooth and airy texture.
- Condensed Milk Mixing: Add all the sweetened condensed milk to the butter. Mix them together for another 2-3 minutes until they are fully combined. Be sure to scrape down the sides and bottom of the bowl to ensure everything is incorporated evenly.
- Marshmallow Fluff Addition: Add the full jar of Strawberry Marshmallow Fluff to the bowl. Mix it in until it's completely integrated into the buttercream. This is what gives the frosting its unique marshmallow flavor and texture.
- Color Enhancement (Optional): If desired, add a few drops of red or pink food coloring to enhance the color. This step is optional and depends on your preference for the final appearance. Mix again for 1-2 minutes.
- Final Mixing: Mix everything for a couple more minutes with a silicone spatula. This helps to knock out some of the air bubbles and ensures a smooth, consistent frosting.
- Piping and Decoration: This frosting works beautifully with a 1M Piping Tip, ideal for decorating cupcakes or cakes. It holds its shape well and provides good pattern definition.
Janis says
Hi...just reading over this recipe. Where does the strawberries come into play?
Fay says
Hi Janis, the Marshmallow Fluff is Strawberry. If you can't find strawberry fluff, you can use plain fluff and a strawberry essence or some strawberry dessert sauce or coulis.