3/4 cup butter, softened
1/4 cup granulated sugar
1/4 cup packed light brown sugar
1 egg yolk
1 3/4 cups all-purpose flour
3/4 teaspoon baking powder
1/8 teaspoon salt

Combine butter, granulated sugar, brown sugar and egg yolk in a medium bowl. Add flour, baking powder and salt; mix well.

Cover; refrigerate about 4 hours or until firm.

Submitted by: Arianna L.