Potato Chip Cookies
["2 sticks butter or margarine", "2/3 c. sugar", "1 egg yolk", "1 1/2 c. flour", "1/2 c. crushed potato chips or corn flakes", "1/2 c. chopped nuts"]
["Cream butter and sugar.", "Add egg yolks, then flour.", "Stir in remaining ingredients.", "Drop cookies on ungreased cookie sheet and flatten with a fork.", "Cook until light brown at 350\u00b0."]
["butter", "sugar", "egg yolk", "flour", "potato chips", "nuts"]