If you have a soft spot for fluffy, pillowy sweetness that transforms simple cupcakes into a show-stopping treat, then this Marshmallow Frosting for Cupcakes Recipe is your new best friend. It’s wonderfully glossy, light as air, and carries that irresistible marshmallow flavor without being overly sweet or sticky. The kind of frosting that invites you to linger over one more cupcake, savoring each bite with a smile. Whether you’re frosting for a birthday, a special gathering, or just because you deserve something delightful, this recipe will quickly become a cherished staple in your baking repertoire.

Ingredients You’ll Need
This Marshmallow Frosting for Cupcakes Recipe calls for a handful of simple ingredients that pack a big punch in flavor and texture. Each component works harmoniously to give you that perfect balance of sweetness, stability, and irresistible marshmallow gloss.
- 4 large egg whites (room temperature): Room temperature whites whip better for a fluffy, stable frosting.
- 1 cup granulated sugar: Provides sweetness and structure as it dissolves gently over heat.
- 1/4 teaspoon cream of tartar: Acts as a stabilizer, helping the egg whites hold their volume and shine.
- 1 teaspoon pure vanilla extract: Adds warm, comforting flavor that complements the marshmallow base beautifully.
- Pinch of salt: Balances out sweetness and enhances all the flavors.
- Optional 1/2 teaspoon almond extract: For a subtle nutty undertone that pairs perfectly with vanilla.
- Optional 1/4 teaspoon lemon juice: Adds a subtle brightness, making the frosting taste even fresher.
How to Make Marshmallow Frosting for Cupcakes Recipe
Step 1: Create a Warm Water Bath
Start by filling a saucepan with about 2 inches of water and bring it to a gentle simmer. This setup will serve as your double boiler to slowly and safely heat your ingredients without scrambling those precious egg whites. In a heatproof bowl, combine the egg whites, granulated sugar, cream of tartar, and the pinch of salt. Place this bowl over the simmering water, making sure it doesn’t touch the water below, so the mixture warms evenly and gently.
Step 2: Whisk and Dissolve
Now the real magic begins! Whisk the mixture constantly for about 4 to 5 minutes. This process dissolves the sugar completely and warms the egg whites just enough to create a safe, silky base. You’ll know you’re there when the mixture reaches 160°F (71°C) or when a little rub between your fingers feels smooth rather than grainy. This step is key to that glossy and stable texture we all love.
Step 3: Whip to Perfection
Carefully transfer your warm mixture to a stand mixer or grab your trusty hand mixer. Beat it on high speed for 6 to 8 minutes. Watch as it transforms into stiff and shiny peaks, and the bowl cools down, signaling the perfect consistency. This is the frothy, cloud-like texture of marshmallow frosting that practically begs to be spread on cupcakes.
Step 4: Flavor and Final Whip
Next, add in your vanilla extract, and if you like, almond extract or lemon juice for that extra splash of flavor. Beat again for about 30 seconds to blend everything into one cohesive, luscious frosting. This final step ensures every bite has that perfect hit of flavor and aroma.
Step 5: Frost and Enjoy
Your Marshmallow Frosting for Cupcakes Recipe is now ready to be spread or piped onto your cupcakes. It’s best used immediately for that irresistible fluffy look and mouthfeel. If you need to pause, refrigerate the frosting for up to 2 hours and whisk it again before spreading to regain that perfect texture.
How to Serve Marshmallow Frosting for Cupcakes Recipe
Garnishes
A light dusting of edible glitter, crushed graham crackers, fresh berries, or a few mini marshmallows can elevate your cupcakes to a new level of fun and festivity. The shiny marshmallow frosting makes each garnish pop visually and adds complementary textures.
Side Dishes
Serve these frosted cupcakes alongside a hot cup of cocoa, chai tea, or a fresh lemonade. The creamy marshmallow sweetness pairs beautifully with warm or refreshing beverages. You can even add some toasted nuts or a small fruit salad to balance the indulgence.
Creative Ways to Present
Consider swirling the frosting into soft peaks using a spatula for a rustic look or pipe fluffy rosettes with a star tip for elegance. Layer your cupcakes with a small dollop of jam or chocolate ganache underneath the frosting for a surprise center. Presentation adds to the joy, and this frosting’s sturdy yet airy texture makes decorating an absolute pleasure.
Make Ahead and Storage
Storing Leftovers
If you have any leftover frosting (and that’s a big if!), place it in an airtight container and refrigerate for up to 2 hours. Before using again, whisk it vigorously to bring back its light and fluffy texture. Avoid long-term refrigeration as the delicate egg whites can start to lose their airiness.
Freezing
Freezing marshmallow frosting isn’t recommended because the texture can separate upon thawing. You want that smooth, glossy finish at its best right after making it, so it’s best enjoyed fresh.
Reheating
To freshen up your frosting after a short refrigerated rest, simply whisk it by hand or with a mixer until it regains its volume and fluffiness. Avoid microwaving as this can cause the egg whites to cook unevenly and lose that signature melt-in-your-mouth feel.
FAQs
Can I use pasteurized egg whites for this Marshmallow Frosting for Cupcakes Recipe?
Yes! Pasteurized egg whites are a great option and make this frosting safer for those concerned about raw egg consumption. Just make sure they’re at room temperature for the best whipping results.
How long does Marshmallow Frosting stay fresh on cupcakes?
Marshmallow frosting is best enjoyed the same day it’s made, especially when used on cupcakes. It can stay fresh for up to 24 hours at room temperature but is best refrigerated if you need longer, just remember to bring it back to room temp before serving.
Is this frosting suitable for piping intricate designs?
Absolutely! Once whipped to stiff peaks, this frosting holds its shape beautifully, making it ideal for piping flowers, rosettes, or even classic swirl toppers on cupcakes.
Can I add food coloring to this Marshmallow Frosting for Cupcakes Recipe?
Definitely! Gel or paste food coloring works best because it won’t thin out the frosting. Add a little at a time and fold gently until you get your desired shade.
What if my frosting turns out too runny?
If the frosting is runny, it may not have been whipped enough or the sugar may not be fully dissolved. Try whipping it longer until stiff peaks form. If needed, you can try warming it gently and continue whisking, but be careful not to cook the eggs.
Final Thoughts
This Marshmallow Frosting for Cupcakes Recipe is a treasure—a fluffy, glossy, and sweet topping that turns a simple cupcake into a gourmet treat. With just a few straightforward ingredients and steps, you create a frosting that tastes like nostalgia and celebration wrapped in one. I encourage you to give it a try and watch your cupcakes become the highlight of any event or cozy night in. Happy frosting!
Print
Marshmallow Frosting for Cupcakes Recipe
- Prep Time: 15 minutes
- Cook Time: 5 minutes
- Total Time: 20 minutes
- Yield: 12 servings (enough to frost 12 cupcakes)
- Category: Frosting
- Method: Stovetop
- Cuisine: American
- Diet: Gluten Free
Description
This Marshmallow Frosting is a glossy, fluffy, and sweet topping perfect for cupcakes, cakes, or any baked good. Made by gently heating egg whites and sugar over simmering water and then whipping the mixture into stiff peaks, this frosting achieves a smooth, glossy texture similar to traditional marshmallows. The recipe features the classic flavors of vanilla with optional almond or lemon extracts, making it versatile and delicious for many dessert applications.
Ingredients
Main Ingredients
- 4 large egg whites (room temperature)
- 1 cup granulated sugar
- 1/4 teaspoon cream of tartar
- Pinch of salt
Flavorings
- 1 teaspoon pure vanilla extract
- Optional: 1/2 teaspoon almond extract
- Optional: 1/4 teaspoon lemon juice
Instructions
- Prepare the Double Boiler: Fill a saucepan with 2 inches of water and bring it to a simmer. This will be used to gently heat the frosting mixture without direct contact to the heat.
- Combine Ingredients: In a heatproof bowl, whisk together the egg whites, granulated sugar, cream of tartar, and a pinch of salt. Place the bowl over the simmering water, ensuring the bottom of the bowl does not touch the water.
- Heat and Dissolve Sugar: Whisk the mixture constantly for 4–5 minutes until the sugar completely dissolves and the mixture reaches 160°F (71°C). Test the mixture by rubbing a bit between your fingers to check that it feels smooth and no sugar granules remain.
- Whip the Frosting: Transfer the heated mixture to a stand mixer or use a hand mixer. Beat on high speed for 6–8 minutes until stiff, glossy peaks form and the bowl feels cool to the touch. This whipping incorporates air for a fluffy texture.
- Add Flavorings: Mix in the vanilla extract and any optional almond or lemon extracts. Beat for another 30 seconds to combine thoroughly.
- Use or Store: Use the frosting immediately by piping or spreading it on your cupcakes or cakes. If not using right away, refrigerate for up to 2 hours and whisk again before applying to restore the texture.
Notes
- Make sure egg whites are at room temperature for best volume and texture.
- Use a candy thermometer to accurately measure the temperature at 160°F to ensure sugar is fully dissolved and the frosting is safe to eat.
- Frosting should be used immediately for best consistency, but can be refrigerated briefly and re-whisked.
- To avoid graininess, ensure sugar is fully dissolved during the heating phase.
- Optional extracts add extra flavor but can be omitted or substituted according to preference.

