1In large bowl, beat butter, powdered sugar, grated orange peel and grated lemon peel with electric mixer on medium speed until light and fluffy. On medium-low speed, beat in flour, 1/4 cup cornmeal and the salt until blended. Stir in candied orange and lemon peel.
2Shape dough into 2 (8-inch) logs. Roll logs in 2 tablespoons cornmeal. Wrap tightly in plastic wrap; refrigerate about 2 hours or until firm.
3Heat oven to 350°F. Unwrap dough; cut each log into 1/4-inch slices. On ungreased cookie sheets, place slices 2 inches apart.
4Bake 12 to 14 minutes or until edges are lightly browned. Remove from cookie sheets to cooling racks.