Peanut Butter Cookies
["1/2 c. butter", "1 c. smooth peanut butter", "1/4 c. sugar", "1/2 c. brown sugar", "1 large egg", "1/2 tsp. vanilla extract", "1 c. flour", "1 tsp. baking soda", "1/8 tsp. salt"]
["Mix butter, peanut butter and sugars thoroughly.", "Add egg and vanilla. Sift together flour, soda and salt.", "Then stir into butter mixture.", "Refrigerate 1 hour."]
["butter", "smooth peanut butter", "sugar", "brown sugar", "egg", "vanilla extract", "flour", "baking soda", "salt"]