In large bowl, beat butter with electric mixer on medium speed 2 minutes or until creamy. Add powdered sugar and cornstarch; beat on medium speed 3 minutes or until well blended. Add flour, beating until blended. Stir in vanilla. Stir in cranberries and sage. Gather dough into a ball; flatten to 6-inch round. Wrap dough in plastic wrap; refrigerate 1 hour.