Impossible Cookies
["1 egg", "2/3 c. sugar", "1 c. peanut butter", "1/2 tsp. vanilla"]
["Beat egg; add sugar and beat until creamy.", "Add vanilla and peanut butter.", "Mix well.", "Form 1-inch balls on ungreased cookie sheet.", "Bake 10 to 12 minutes at 350\u00b0.", "Let cookies harden on cookie sheet a few minutes.", "Makes 30 to 40 cookies.", "(This does not have any flour.)"]
["egg", "sugar", "peanut butter", "vanilla"]