Mystery Cookies
["1 lb. butter or margarine", "1 1/2 c. sugar", "2 tsp. vanilla", "3 1/2 c. flour", "1 1/2 c. pecans, chopped", "2 c. potato chips, crushed"]
["Beat butter and sugar together until fluffy. Add remaining ingredients and mix well. Drop by teaspoon on ungreased cookie sheet. Bake at 350\u00b0 for 10 minutes.", "Makes 12 dozen."]
["butter", "sugar", "vanilla", "flour", "pecans", "potato chips"]