Dessert & Treats Recipes Cake Recipes Fillings & Frostings Buttercream Frosting Recipes Strawberry Buttercream Frosting 3.1 (338) 46 Reviews By Martha Stewart Martha Stewart Martha Stewart is a bestselling author, entrepreneur, and lifestyle expert who has taught millions of people through generations the joy of entertaining, cooking, gardening, collecting, crafting, and home renovating via her eponymous magazine, Martha Stewart Living, Emmy-winning television shows, and 99 books (and counting). Based in Katonah, N.Y., where she helms her 156-acre Bedford Farm, Martha is America's first self-made female billionaire. Editorial Guidelines Updated on July 5, 2017 Rate PRINT Share Close Photo: Con Poulos Yield: 5 cups Use this recipe to decorate our Strawberry Cupcakes. Ingredients 4 large egg whites, room temperature 1 ¼ cups sugar ¾ pound (3 sticks) unsalted butter, softened, cut into small pieces 1 ½ cups fresh strawberries, pureed Directions Place whites and sugar in a heatproof mixer bowl set over a pot of simmering water. Whisk until sugar dissolves and mixture registers 160 degrees on a candy thermometer. Remove from heat, and attach bowl to a mixer. Whisk on medium speed for 5 minutes. Increase speed to medium-high, and whisk until stiff, glossy peaks form, about 6 minutes. Reduce speed to medium, and add butter, 1 piece at a time, whisking well after each addition. Switch to a paddle attachment. With mixer on low, add strawberry puree, and beat until smooth, 3 to 5 minutes. Use immediately, or cover, and refrigerate. Cook's Notes Refrigerate for up to 3 days. Bring to room temperature, and beat on low speed until smooth before using. Originally appeared: Martha Stewart Living, February 2009 Rate It PRINT