Source: Everyday Food, April 2009
- 4 tablespoons (1/2 stick) unsalted butter, room temperature
- 1 1/2 cups confectioners' sugar
- 1/4 cup granulated sugar
- 2 teaspoons pure vanilla extract
In a large bowl, using an electric mixer, beat butter until light and fluffy. Gradually add confectioners' sugar and granulated sugar, beating until combined. Beat in vanilla extract.