Caramel Buttercream for Chocolate Stout Cake

  • Yield: Makes about 5 cups

Source: Martha Stewart Weddings


  • 1 1/4 cups sugar
  • 5 large egg whites
  • 4 sticks unsalted butter, softened and cut into tablespoon-size pieces
  • 1 teaspoon pure vanilla extract
  • 1/2 to 3/4 cup Salted Caramel for Chocolate Stout Cake


  1. In the heatproof bowl of a mixer, whisk together sugar and egg whites. Set over (not in) a pot of simmering water and whisk until sugar is dissolved and a thermometer registers 140 degrees.

  2. Beat in mixer fitted with the whisk attachment until mixture until stiff, glossy peaks form. Reduce speed to medium-low and add butter, a few tablespoons at a time; continue beating until smooth. Stir in vanilla and caramel. Buttercream may be used immediately or refrigerated up to 3 days. If longer storage is required, place buttercream in a plastic container covered with plastic wrap directly on top of buttercream, cover with a tight fitting lid, and freeze up to 1 month.


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