Chocolate Frosting

This is a quick buttercream frosting with a rich chocolate taste. Unlike other recipes, this one doesn't form a "crust" if left to sit. Makes enough to frost one 9-inch 2-layer cake. Can be made with milk, semisweet, or bittersweet chocolate.
Based on a recipe by Yvonne Ruperti, Cook's Illustrated, March & April 2008.
Course: Desserts - Frostings, Toppings, Sauces
Servings: 3 cups
Author: Catherine Christiano


  • 8 ounces chocolate milk, semisweet, or bittersweet is fine
  • 20 tablespoons unsalted butter softened to 60 to 65 degrees
  • 1 cup confectioner's sugar
  • 3/4 cup Dutch-process cocoa powder
  • pinch table salt
  • 3/4 cup light corn syrup
  • 1 teaspoon vanilla extract


  • Heat water in bottom of double boiling until hot but not boiling. In top part of double boiler add chocolate and corn syrup. Stir until chocolate is just melted, remove from heat and allow chocolate to cool to 85 -100°F.
  • In food processor, process butter, sugar, cocoa, and salt until smooth, about 30 seconds, scraping sides of bowl as needed. Add vanilla. Scrape sides of bowl, add chocolate - corn syrup mixture, then pulse until smooth and creamy, 10 -15 seconds. Frosting can be used immediately or within 3 hours. For longer storage, refrigerate frosting, covered, and let stand at room temperature for 1 hour before using.


Pairs well with  Yellow Cake
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