Jewel Cookies
["1/2 c. soft butter or margarine", "1/4 c. light brown sugar, firmly packed", "1 egg yolk", "1 tsp. vanilla extract", "1 c. sifted all-purpose flour", "1 egg white, slightly beaten", "1 c. finely chopped walnuts or pecans", "2 Tbsp. currant jelly"]
["In medium bowl with wooden spoon, beat butter, sugar, egg yolk and vanilla until smooth.", "Stir in flour just until combined. Refrigerate 30 minutes.", "Meanwhile, preheat oven to 375\u00b0.", "Using hands, roll dough into balls 1-inch in diameter; dip in egg white, then roll in walnuts.", "Place 1 inch apart on ungreased cookie sheets.", "With thimble or thumb, press center of each cookie.", "Bake 10 to 12 minutes or until a delicate golden brown.", "Remove to wire rack; cool.", "Place 1/4 teaspoon jelly in center of each cookie."]
["butter", "light brown sugar", "egg yolk", "vanilla extract", "flour", "egg", "walnuts", "currant jelly"]