Food & Cooking Recipes Dessert & Treats Recipes Perfect Homemade Marshmallows 3.5 (100) 19 Reviews 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 Editorial Guidelines Updated on March 16, 2021 Print Rate It Share Share Tweet Pin Email Yield: 40 Marshmallows were originally made from the root of the marshmallow plant; today, corn syrup and sugar are the main ingredients. Homemade marshmallows can be cut into any shape you like, and used to top any type of treat, or on their own, for dessert. Ingredients 2 ½ tablespoons unflavored gelatin 1 ½ cups granulated sugar 1 cup light corn syrup ¼ teaspoon salt 2 tablespoons pure vanilla extract Confectioners' sugar, for dusting Directions Combine gelatin and 1/2 cup cold water in the bowl of an electric mixer with whisk attachment. Let stand 30 minutes. Combine granulated sugar, corn syrup, salt, and 1/2 cup water in a small heavy saucepan; place over low heat, and stir until sugar has dissolved. Wash down sides of pan with a wet pastry brush to dissolve sugar crystals. Clip on a candy thermometer; raise heat to high. Cook syrup without stirring until it reaches 244 degrees (firm-ball stage). Immediately remove pan from heat. With mixer on low speed, slowly and carefully pour syrup into the softened gelatin. Increase speed to high; beat until mixture is very thick and white and has almost tripled in volume, about 15 minutes. Add vanilla; beat to incorporate. Generously dust an 8-by-12-inch glass baking pan with confectioners' sugar. Pour marshmallow mixture into pan. Dust top with confectioners' sugar; wet your hands, and pat it to smooth. Dust with confectioners' sugar; let stand overnight, uncovered, to dry out. Turn out onto a board; cut marshmallows with a dry hot knife into 1 1/2-inch squares, and dust with more confectioners' sugar. Rate it Print