Food & Cooking Recipes Dessert & Treats Recipes Marshmallow Sauce 3.5 (2) Add your rating & review By Martha Stewart Test Kitchen Martha Stewart Test Kitchen The recipes developed by our test kitchen team have undergone a rigorous process of development and testing, ensuring that every element is optimal, from ingredient amounts to method and cooking time. This process includes triple-testing recipes to ensure they meet our high standards. The many stellar cooks and food editors who have been part of our team include Sarah Carey, Lucinda Scala Quinn, Jennifer Aaronson, Shira Bocar, Anna Kovel, Greg Lofts, Riley Wofford, Lauren Tyrell, and Lindsay Leopold. Editorial Guidelines Updated on May 16, 2017 Print Rate It Share Share Tweet Pin Email Yield: 2 cups So much better than store-bought, this marshmallow sauce is easier to make than it seems. Add a dollop of the sticky sweet stuff to your next ice cream sundae. Ingredients ¾ cup light corn syrup ½ cup sugar ¼ cup water 2 large egg whites, room temperature Directions In a small saucepan, combine corn syrup and sugar with 1/4 cup water. Bring to a boil over high heat, and clip on a candy thermometer. Continue to boil, occasionally brushing the sides of the pan with a pastry brush dipped in water to prevent stray granules of sugar from crystallizing. Meanwhile, in the bowl of an electric mixer fitted with the whisk attachment, whip egg whites until medium peaks form. When the syrup reaches 238 degrees (soft-ball stage), after about 7 minutes, remove from heat. With mixer running at medium speed, very slowly pour the syrup down the side of the bowl of egg whites in a steady stream, beating until syrup is fully incorporated and sauce is shiny and fluffy. Serve. Rate it Print