In medium bowl, stir together flour, cardamom, baking powder and salt until blended; set aside. In large bowl, beat butter and 1 cup granulated sugar with electric mixer on medium speed 3 minutes or until light and fluffy. Add egg, egg yolk and vanilla; beat on low speed until combined. Add flour mixture; beat until soft dough forms. Cover and refrigerate 5 to 10 minutes or until firm.