Recipe Variations Add-ins: white chocolate chips, mini chocolate chips, 1 teaspoon strawberry extract or vanila extract in ...

2 sticks (1/2 pound) unsalted butter, softened. 12 ounces white chocolate, melted and cooled slightly. 1 cup powdered sugar. 1 teaspoon pure vanilla extract ...

Beat in the melted white chocolate. Add the dry ingredients in 2 batches, alternating with the buttermilk. In a medium bowl, beat the egg whites until soft peaks form.

Line a 1.5-litre bowl with baking paper. Place the chocolate into a bowl and put it over a pot of simmering water, stirring until it is smooth.