Linzer Bars

Preheat oven to 325°F (160°C) . Grease a 9-inch square baking pan; set aside. In large mixing bowl, cream butter, sugar, egg, lemon peel, cinnamon, salt and cloves. Blend in flour and walnuts. Set aside about 1/4 of the dough for lattice top. Pat remaining dough into bottom and about 1/2-inch up sides of pan. Spread with jam. Make pencil-shaped strips of remaining dough, rolling against a lightly floured surface with palms of hands. Arrange in lattice pattern over top, pressing ends against dough on sides. Bake for 45 minutes or until lightly browned. Cool in pan on wire rack. Cut into bars