Food & Cooking Recipes Dessert & Treats Recipes Royal Icing for Marshmallow Treats Be the first to rate & 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 Photo: Gentl & Hyers Yield: 1 cup Use this recipe to decorate our Sugar-Coated Marshmallow Bunnies and Chicks, Chocolate-Coated Marshmallow Chicks, and Flat Marshmallow Shapes. While not in use, the tip of the icing bag should be wrapped in a damp paper towel -- icing hardens quickly when exposed to air. Ingredients ½ pound confectioners' sugar (2 cups) 2 ½ tablespoons meringue powder ¼ cup water Black or dark-brown gel food coloring Directions In the bowl of an electric mixer fitted with the paddle attachment, combine confectioners' sugar and meringue powder with scant 1/4 cup water on low speed. Mix until fluffy yet dense, 10 to 15 minutes. Color the icing as needed starting with a small amount of gel food coloring.Transfer to a small pastry bag fitted with a 1/32-inch pastry tip (#1 Ateco). If making marshmallow treats, pipe faces as desired, or pipe eyes on both sides of coated chicks and two eyes and a nose on bunnies. Pipe one eye on flat bunnies and chicks. Store the royal icing in an airtight container up to a week, and stir before using. Rate it Print