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4.88 from 8 votes

Homemade Marshmallow Sauce

This easy Homemade Marshmallow Sauce is the perfect topping for an ice cream sundaes!  This stuff is SO yummy and way better than any store-bought variety.
Prep Time5 mins
Cook Time15 mins
Total Time20 mins
Course: Dessert
Cuisine: American
Diet: Gluten Free
Servings: 12 servings
Calories: 179kcal
Author: Amy Nash


  • 1 cup water divided
  • 1 teaspoon unflavored powdered gelatin
  • 1 ½ cups granulated sugar
  • 1 cup light corn syrup
  • teaspoon kosher salt
  • 1 teaspoon vanilla extract


  • In the mixing bowl of a stand mixer with a whisk attachment, mix the gelatin with ½ cup of the cold water for a few seconds, then let it sit for 5 minutes so the gelatin can bloom.
  • In a saucepan, bring the sugar, corn syrup, salt and remaining ½ cup cold water to a boil over medium­-high heat.
  • Continue cooking until the temperature reaches 240 degrees F on a candy thermometer, then remove from heat and pour over the gelatin mixture.
  • Add the vanilla extract and beat on low speed for 2 minutes. Increase the speed to high and beat for about 10 to 12 minutes until the mixture turns thick, white and glossy.
  • Store in an airtight container in the refrigerator for up to one month.


Calories: 179kcal | Carbohydrates: 47g | Protein: 1g | Fat: 1g | Sodium: 44mg | Potassium: 1mg | Sugar: 47g | Calcium: 5mg | Iron: 1mg