Peanut Butter Cookies
["1 1/2 c. margarine", "1 1/2 c. peanut butter", "1 1/2 c. sugar", "1 1/2 c. firmly packed brown sugar", "3 eggs, beaten", "1 1/2 tsp. vanilla", "3 3/4 c. sifted flour", "1 1/2 tsp. baking powder", "1 1/2 tsp. baking soda", "1 1/2 tsp. salt"]
["Stir together margarine, peanut butter and sugar until blended.", "Beat in eggs and vanilla.", "Sift together flour, baking powder, soda and salt over sugar mixture.", "Stir well until blended.", "If necessary, chill dough until it can be easily handled.", "Shape into 1-inch balls.", "Place about 2 inches apart on greased baking sheet; flatten with floured fork, making crisscross pattern.", "Bake at 350\u00b0 for 12 to 15 minutes."]
["margarine", "peanut butter", "sugar", "brown sugar", "eggs", "vanilla", "flour", "baking powder", "baking soda", "salt"]