Peanut Butter Cookies
["2 c. flour", "1 1/2 tsp. baking powder", "1/2 tsp. soda", "1/8 tsp. salt", "1 c. peanut butter", "1/2 c. margarine", "1 c. sugar", "1 c. packed brown sugar", "2 eggs", "1/2 c. milk", "1 tsp. vanilla"]
["Cream peanut butter, margarine and sugars.", "Add eggs and beat until fluffy.", "Stir in dry ingredients, alternately with milk. Add vanilla.", "Drop by rounded teaspoonfuls onto ungreased cookie sheet.", "Bake at 350\u00b0 for about 15 minutes."]
["flour", "baking powder", "soda", "salt", "peanut butter", "margarine", "sugar", "brown sugar", "eggs", "milk", "vanilla"]