Marshmallow Buttercream Frosting: The Ultimate Fluffy Swirl Recipe

Introduction

Marshmallow buttercream frosting is a light and fluffy topping that adds a sweet, creamy touch to any cupcake or cake. This recipe delivers a perfectly smooth, slightly chewy texture with a hint of vanilla, ideal for creating beautiful swirls and garnishing with mini marshmallows.

Ingredients

• 1 cup Unsalted Butter (227g, softened to room temperature)
• 7 oz Marshmallow Fluff (198g, one standard jar)
• 3-4 cups Powdered Sugar (375g-500g, sifted)
• 1 tsp Vanilla Extract (5ml, pure)
• 1 pinch Fine Sea Salt (to balance sweetness)
• 1-2 tbsp Heavy Cream (15-30ml, as needed for consistency)
• 3 Mini Marshmallows per cupcake (for garnish)

Instructions

1. Step 1: Beat the softened butter on medium-high speed for 3 to 5 minutes until it is pale and fluffy.
2. Step 2: Switch to a whisk attachment and add the marshmallow fluff, mixing until smooth and semi-glossy.
3. Step 3: Gradually incorporate the sifted powdered sugar on low speed until fully combined with the butter and fluff.
4. Step 4: Add vanilla extract, sea salt, and heavy cream. Whip on high speed for 2 minutes until the frosting is dense, airy, and forms soft peaks.
5. Step 5: Pipe tall swirls of frosting onto your cupcakes and press three mini marshmallows gently into the side of each swirl for decoration.

Tips & Variations

• If the frosting is too stiff, add a little more heavy cream, one teaspoon at a time, until you reach the desired consistency.
• For extra flavor, try adding a teaspoon of almond extract instead of vanilla.
• Use gel food coloring to tint the frosting without altering its texture.

Storage

Store leftover frosting in an airtight container in the refrigerator for up to one week. Before using, bring it back to room temperature and rewhip briefly to restore its fluffy texture. Frosted cupcakes are best enjoyed the same day but can be stored covered at room temperature for 1-2 days.

How to Serve

Serve this delicious recipe with your favorite sides.

FAQs

Can I make this marshmallow buttercream ahead of time?

Yes, you can prepare the frosting a day in advance. Keep it refrigerated in an airtight container and rewhip before use to refresh its texture.

Is this frosting suitable for piping detailed decorations?

This frosting is excellent for tall swirls and simple piped shapes. For very intricate designs, you may want a stiffer buttercream, but this formula holds its shape well for most decorating needs.

Marshmallow Buttercream Frosting: The Ultimate Fluffy Swirl Recipe

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★★★★★

4.6 from 108 reviews

This Marshmallow Buttercream Frosting is a luscious, fluffy swirl of sweet marshmallow fluff and creamy butter, perfect for decorating cupcakes or cakes. With a light, airy texture and a subtle vanilla hint, it offers a delightful balance of sweetness and richness, garnished with mini marshmallows for added charm.

• Author: lina
• Prep Time: 5 minutes
• Cook Time: 10 minutes
• Total Time: 15 minutes
• Yield: 24 servings 1x
• Category: Frosting
• Method: No-Cook
• Cuisine: American

Ingredients

Scale 1x2x3x

Frosting

• 1 cup Unsalted Butter (227g, softened to room temperature)
• 7 oz Marshmallow Fluff (198g, one standard jar)
• 3–4 cups Powdered Sugar (375g-500g, sifted)
• 1 tsp Vanilla Extract (5ml, pure)
• 1 pinch Fine Sea Salt (to balance sweetness)
• 1–2 tbsp Heavy Cream (15-30ml, as needed for consistency)

Garnish

• 3 mini marshmallows per cupcake

Instructions

1. Preparation: Ensure the butter is softened to room temperature to make creaming easier and achieve a smooth frosting texture.
2. Cream Butter: Beat the softened butter on medium-high speed for 3-5 minutes until it becomes pale and fluffy—this helps incorporate air for a light frosting.
3. Add Fluff: Switch to a whisk attachment and add the marshmallow fluff. Beat until the mixture is smooth and semi-glossy.
4. Incorporate Sugar: Gradually add sifted powdered sugar on low speed to avoid a sugar cloud, mixing until just combined.
5. Whip to Volume: Add vanilla extract, fine sea salt, and heavy cream. Whip on high speed for 2 minutes until the frosting is dense, airy, and forms soft peaks.
6. Decorate: Pipe tall swirls onto cupcakes using a piping bag, then gently press three mini marshmallows into the side of each frosting swirl for decoration.

Notes

• Adjust powdered sugar amount based on desired sweetness and consistency.
• Use room temperature butter for best results.
• Heavy cream helps adjust frosting consistency; add slowly to avoid thinning too much.
• Store leftover frosting covered in the refrigerator and bring to room temperature before use.
• Can be used on cakes as well as cupcakes.

Keywords: Marshmallow Buttercream, Frosting, Cupcake Frosting, Sweet Frosting, Fluffy Buttercream, Marshmallow Fluff Frosting