Peanut Butter Cookies
["1/4 lb. butter", "1/2 c. chunk-style peanut butter", "1/2 c. granulated sugar", "1/2 c. dark brown sugar", "1 egg", "1/2 tsp. vanilla", "1/2 tsp. salt", "1/2 tsp. baking soda", "1 c. flour"]
["Preheat oven to 350\u00b0.", "Grease some cookie sheets."]
["butter", "chunk-style peanut butter", "sugar", "brown sugar", "egg", "vanilla", "salt", "baking soda", "flour"]