Delicious, macadamia nut cookies smothered with a refreshing citrus flavored frosting.
Cream butter and sugar; add egg yolk, orange juice and peel; mix well. Combine flour and cornstarch; add to creamed mixture; mix well. Stir in nuts. Roll into 1 1/2-inch balls; place two inches apart on ungreased baking sheets. Gently flatten with the bottom of a glass dipped in confectioners' sugar. Bake at 350 degrees for 12–15 minutes or until edges begin to brown. Cool. Frost.
Combine sugar, butter, orange juice and orange peel; beat until smooth. Frost cookies. Makes 3 1/2 dozen.