Peanut Butter Brownies
["2 1/4 c. flour", "2 1/2 tsp. baking powder", "2/3 c. soft margarine", "1 1/4 c. packed brown sugar", "3 eggs", "1 1/4 c. white sugar", "1/2 tsp. salt", "2/3 c. smooth peanut butter (can use chunky if you prefer)", "1 tsp. vanilla", "1 (16 oz.) pkg. chocolate chips"]
["Combine flour, baking powder and salt. Set aside. In large bowl, combine margarine, peanut butter, sugars and vanilla. Beat until creamy. Add eggs, one at a time. Beat well. Stir in chocolate chips. Spread evenly into a well-greased 9 x 13 pan. Bake for about 35 minutes at 350\u00b0. After cooling, you can frost with a chocolate frosting."]
["flour", "baking powder", "margarine", "brown sugar", "eggs", "white sugar", "salt", "smooth peanut butter", "vanilla", "chocolate chips"]