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Homemade Marshmallow Fluff

homemade marshmallow fluff

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This fluffy, sweet, and versatile marshmallow fluff is perfect for spreading on toast, swirling into hot chocolate, or layering into desserts like s’mores. The best part? It’s made from scratch and tastes even better than store-bought!

Ingredients

Units Scale
  • 90g water (1/3 cup)
  • 180g granulated sugar (3/4 cup)
  • 240g corn syrup (3/4 cup)
  • 3 egg whites, room temperature
  • 1/2 tsp cream of tartar
  • 1 tsp vanilla extract (optional)

Instructions

  1. In a medium saucepan, combine the water, granulated sugar, and corn syrup. Place over medium heat and stir gently until the sugar dissolves. Stop stirring once dissolved to prevent crystallization. Attach a candy thermometer and let the mixture simmer until it reaches 240°F (115°C).
  2. While the syrup is heating, add the egg whites and cream of tartar to a clean, dry mixing bowl. Using a stand mixer or handheld mixer, whip on medium-high speed until soft peaks form, about 3–4 minutes.
  3. Once the syrup reaches 240°F, remove it from the heat. With the mixer running on low speed, slowly pour the hot syrup in a thin, steady stream into the whipped egg whites, avoiding splashes.
  4. After adding all the syrup, increase the mixer speed to high and whip until the mixture is glossy, fluffy, and holds stiff peaks. This takes about 7–8 minutes, and the bowl should feel slightly warm when done.
  5. Transfer the marshmallow fluff to an airtight container, allow it to cool completely, and store it at room temperature for up to 3 days or in the refrigerator for up to 2 weeks.