Peanut Butter Cookies
["2 1/2 c. unsifted flour", "1 tsp. baking powder", "1 tsp. soda", "1/4 tsp. salt", "1 c. margarine", "1 c. Skippy peanut butter", "1 c. sugar", "1 c. brown sugar", "2 eggs", "1 tsp. vanilla"]
["Sift first 4 ingredients together.", "In large bowl with mixer at medium speed, beat margarine and peanut butter until smooth. Beat in sugars, eggs, then vanilla.", "Add flour mixture; beat until well blended."]
["flour", "baking powder", "soda", "salt", "margarine", "peanut butter", "sugar", "brown sugar", "eggs", "vanilla"]