Dessert & Treats Recipes Cake Recipes Fillings & Frostings Buttercream Frosting Recipes Coconut Buttercream 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 April 15, 2021 Print Rate It Share Share Tweet Pin Email Photo: Bryan Gardner Prep Time: 15 mins Total Time: 25 mins Yield: 4 cups Swiss meringue buttercream takes on a nutty, toasted flavor with the addition of coconut oil. Use this coconut buttercream to frost our showstopping Meyer-Lemon and Coconut Layer Cake or a simple vanilla sheet cake. Ingredients 5 large egg whites, room temperature 1 cup sugar ¼ teaspoon kosher salt 6 tablespoons raw unrefined coconut oil (3 ounces), room temperature (solid) 3 sticks unsalted butter, room temperature, cut into small pieces Directions Combine egg whites, sugar, and salt in the bowl of a stand mixer set over (not in) a pot of simmering water. Whisk constantly until sugar has dissolved, and mixture is warm and feels completely smooth when rubbed between fingertips. Transfer bowl to mixer fitted with the whisk attachment. Starting on low speed and gradually increasing to medium-high, beat until stiff, glossy peaks form, about 2 minutes. Continue beating until bottom of bowl is cool to the touch, about 10 minutes. Reduce speed to medium-low and beat in coconut oil, a few tablespoons at a time, then butter, a few pieces a time, until combined, scraping down bowl as needed. Switch to paddle attachment and beat on low until smooth, about 1 minute more. Buttercream can be refrigerated in an airtight container up to 1 week; return to room temperature and beat until smooth before using. Rate it Print