In a small bowl, cream butter and confectioners' sugar until light and fluffy; gradually beat in flour until crumbly. Stir in cereal. Press into a greased 13-in. x 9-in. baking pan. Bake at 350° for 18-22 minutes or until lightly browned.
Meanwhile, in a large bowl, beat the eggs, sugar, coconut, juices, flour and peels until frothy. Pour over the hot crust. Bake for 18-22 minutes or until lightly browned. Cool on a wire rack. Dust with confectioners' sugar; cut into bars. Store in the refrigerator. Yield: 2 dozen.