Creamy Peanut Butter Frosting

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Appears in Cook's Illustrated May/June 2010

The ultimate cupcake isn't complete without the ultimate frosting.

SERVES Makes about 2 1/4 cups

TIME 30 minutes

WHY THIS RECIPE WORKS

For a refined peanut butter frosting recipe to complement our chocolate cupcakes, we opted for a cooked buttercream frosting of the Swiss meringue variety, where egg whites and granulated sugar are heated over a double boiler, then whipped ...

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