Among your cookies, one of chocolate

At least one of the offerings among your assortment of Christmas cookies must be made of chocolate. Here is a recipe for a bar cookie that is really a shortbread spread with a glaze of sweet chocolate, then sprinkled with chopped nuts.

Children like these very much, and since they are easy and quick to make, why not ask one or two children to help you in the kitchen? It will keep them busy during the exciting holiday season, and they will enjoy contributing to the preparations for Christmas. Chocolate-Coated Tiles 1/2 pound unsalted butter, softened 2/3 cup sugar 2 egg yolks 1 teaspoon vanilla extact 1 cup flour 6 ounces German's sweet baking chocolate 3 tablespoons unsalted butter 2/3 cup fine-chopped walnuts or pecans

Preheat oven to 350 degrees F. Butter a 10 by 14-inch pan. Cream butter and sugar until light and fluffy. Beat in egg yolks and vanilla extract. Fold in flour and spread batter in prepared pan. Bake for 15 minutes, or until edges just begin to turn a pale brown. Cool Thoroughly in pan on wire rack.

To make topping, melt chocolate with butter in top of double boiler over simmering water, stirring constantly. Spread while warm over entire surface of cake layer. Sprinkle with chopped nuts and cut in 1 3/4-inch squares. Makes 4 dozen squares.