Black Walnut Butter Cookies

3/4 cup butter (no substitutes), softened
1 cup all-purpose flour
1/2 cup cornstarch
1/2 cup confectioners' sugar
1/2 cup chopped black walnuts or walnuts
Additional confectioners' sugar

In a mixing bowl, cream butter. Combine flour, cornstarch and sugar; add to butter and mix well. Stir in walnuts.

Roll into 3/4-in. balls and place 1 in. apart on greased baking sheets. Bake at 300° for 20-25 minutes or until set. Cool on wire racks. Dust with confectioners' sugar. Makes 6 dozen.