Thumbprint Cookies
["1/2 c. shortening", "1/2 c. margarine", "1/2 c. brown sugar", "2 egg yolks", "1 tsp. vanilla", "2 c. flour", "1/2 tsp. salt", "2 egg whites", "1 c. finely chopped walnuts"]
["Heat oven to 350\u00b0.", "Mix shortening, margarine, brown sugar, egg yolk and vanilla.", "Blend flour and salt.", "Stir in little at a time.", "Roll 1 teaspoon dough into balls.", "Dip in slightly beaten egg whites.", "Roll in nuts.", "Place 1 inch apart on ungreased cookie sheet.", "Press thumb gently into center.", "Bake 10 to 12 minutes. Cool.", "Fill holes with strawberry jam.", "Makes 5 dozen cookies."]
["shortening", "margarine", "brown sugar", "egg yolks", "vanilla", "flour", "salt", "egg whites", "walnuts"]