Dessert & Treats Recipes Cake Recipes Fillings & Frostings Buttercream Frosting Recipes Billy's Chocolate Buttercream Frosting 3.7 (66) 7 Reviews By Martha Stewart Editors Martha Stewart Editors Facebook Instagram Twitter Website An article attributed to "Martha Stewart Editors" indicates when several writers and editors have contributed to an article over the years. These collaborations allow us to provide you with the most accurate, up-to-date, and comprehensive information available.The Martha Stewart team aims to teach and inspire readers daily with tested-until-perfected recipes, creative DIY projects, and elevated home and entertaining ideas. They are experts in their fields who research, create, and test the best ways to help readers design the life they want. The joy is in the doing. Editorial Guidelines Updated on March 25, 2020 Print Rate It Share Share Tweet Pin Email Photo: Johnny Miller Yield: 30 cupcakes Billy Reece of Billy's Bakery, a popular New York City bakery, shared this tempting recipe that works well on a number of baked goods, with Martha—go ahead and have a taste. Ingredients 2 cups (4 sticks) unsalted butter, room temperature 12 ounces semisweet chocolate, melted and cooled 3 tablespoons milk 1 ½ teaspoons pure vanilla extract 5 cups confectioners' sugar Directions In the bowl of an electric mixer fitted with the paddle attachment, beat butter until smooth and creamy, 2 to 3 minutes. With mixer on low speed, add chocolate until just combined. Add milk, vanilla, and sugar; mix on medium until well combined, being careful not to overmix. Rate it Print