Potato Chip Cookies
["1 c. butter", "1/2 c. sugar", "1 egg yolk", "1/2 c. nuts (optional)", "3/4 c. crushed potato chips", "1 tsp. vanilla", "2 c. flour"]
["Cream together butter and sugar.", "Add rest of ingredients; mix well."]
["butter", "sugar", "egg yolk", "nuts", "potato chips", "vanilla", "flour"]