Peanut Butter Brownies
["3/4 c. (1 1/2 sticks) butter, melted", "3/4 c. creamy or crunchy peanut butter", "1 3/4 c. sugar", "2 tsp. vanilla extract", "4 eggs", "1 1/4 c. all-purpose flour", "1/2 tsp. baking powder", "1/4 tsp. salt", "1/4 c. cocoa"]
["Preheat oven to 350\u00b0.", "Grease 13 x 9 x 2-inch baking pan. Add peanut butter to melted butter in large bowl; stir until peanut butter melts.", "Stir in sugar and vanilla.", "Beat in eggs. Add flour, baking powder and salt; beat well.", "Remove 1 3/4 cup batter; stir cocoa into this part.", "Spread cocoa batter in prepared pan; spread remaining peanut butter batter over top. Bake 30 minutes or until brownies begin to pull away from sides of pan.", "Cool completely in pan.", "Cut into bars.", "Makes about 3 dozen."]
["butter", "crunchy peanut butter", "sugar", "vanilla extract", "eggs", "flour", "baking powder", "salt", "cocoa"]