Marshmallow Fluff Recipe: Light, Fluffy, and Foolproof!

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June 23, 2025

You’ve stumbled upon the ultimate marshmallow fluff recipe that’s as fun to make as it is to eat. Yes, this homemade version will make you forget the store-bought stuff ever existed. Let’s dive into the sweet, sticky world of marshmallow fluff!

Why This Recipe Works

  • It uses simple, pantry-staple ingredients for a hassle-free experience.
  • The step-by-step instructions ensure even beginners can achieve perfect fluffiness.
  • Customizable flavors mean you can make it uniquely yours every time.

Ingredients

  • 3/4 cup granulated sugar
  • 1/2 cup light corn syrup
  • 1/4 cup water
  • 2 large egg whites, room temperature
  • 1/4 teaspoon cream of tartar
  • 1 teaspoon pure vanilla extract

Equipment Needed

  • Stand mixer or hand mixer
  • Medium saucepan
  • Candy thermometer
  • Rubber spatula
  • Large mixing bowl

Instructions

Marshmallow Fluff Recipe

Step 1: Combine Sugar, Corn Syrup, and Water

In a medium saucepan, combine the granulated sugar, light corn syrup, and water. Stir gently to mix. Place over medium heat and attach your candy thermometer to the side of the pan. Heat until the mixture reaches 240°F (soft-ball stage), which should take about 5-7 minutes. Tip: Avoid stirring once the mixture starts boiling to prevent crystallization.

Step 2: Whip the Egg Whites

While the sugar mixture heats, in a large mixing bowl, whip the egg whites and cream of tartar with a stand or hand mixer until stiff peaks form. This should take about 3-4 minutes on high speed. Tip: Ensure your bowl and whisk are completely grease-free for the best volume.

Step 3: Slowly Add the Hot Sugar Syrup

With the mixer on low, carefully drizzle the hot sugar syrup into the whipped egg whites. Increase the speed to high and continue to whip until the mixture becomes thick, glossy, and triples in volume, about 5-7 minutes. Tip: Pour the syrup in a slow, steady stream to avoid deflating the egg whites.

Step 4: Add Vanilla Extract

Once the mixture is fluffy and holds its shape, beat in the vanilla extract until just combined. Your marshmallow fluff is now ready to use or store.

Tips and Tricks

For those looking to elevate their marshmallow fluff game, consider these advanced tips. First, experiment with different extracts like almond or peppermint for a flavor twist. Second, if you’re making fluff in advance, store it in an airtight container in the fridge for up to two weeks. Third, for a smoother texture, ensure all your equipment is meticulously clean before starting. Lastly, if you’re in a humid environment, your fluff might be stickier; a bit more cream of tartar can help stabilize it.

Recipe Variations

  • Chocolate Fluff: Add 1/4 cup cocoa powder during the final mixing stage for a chocolatey twist.
  • Fruit-Infused Fluff: Fold in 1/2 cup of your favorite fruit puree after the vanilla for a fruity flavor.
  • Spiced Fluff: Mix in 1 teaspoon of pumpkin pie spice for a fall-inspired version.
  • Vegan Fluff: Substitute aquafaba for the egg whites and use a vegan sugar to keep it plant-based.

Frequently Asked Questions

Can I make marshmallow fluff without a candy thermometer?

While a candy thermometer is recommended for precision, you can test the sugar syrup by dropping a small amount into cold water. If it forms a soft ball that flattens when removed from the water, it’s ready. However, this method requires practice to master.

Why did my fluff not become fluffy?

This usually happens if the egg whites weren’t whipped to stiff peaks before adding the syrup or if the syrup wasn’t hot enough. Ensuring your equipment is clean and your syrup reaches the correct temperature is crucial.

How long does homemade marshmallow fluff last?

Stored in an airtight container in the refrigerator, your fluff can last up to two weeks. Make sure to give it a quick stir before using if it separates slightly.

Summary

This marshmallow fluff recipe is your ticket to a world of sweet, fluffy goodness. With simple ingredients and easy steps, you’ll be whipping up batches of this delightful treat in no time. Perfect for sandwiches, dips, or straight off the spoon!

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