Peanut Butter Swirl Brownies
["1/2 c. margarine", "1 c. sugar", "2 eggs", "1 c. flour", "2 oz. unsweetened chocolate, melted and cooled", "1/3 c. chunky peanut butter", "1/4 c. miniature semi-sweet chocolate pieces"]
["Heat margarine until melted and remove from heat.", "Stir in sugar and eggs.", "Beat slightly by hand just until combined; stir in flour.", "Remove 3/4 c. of batter and set aside.", "Stir melted chocolate into remaining batter.", "Spread chocolate batter into a greased 9 x 9 x 2 baking pan; set aside.", "Stir peanut butter into reserved batter.", "Dollop on top of chocolate batter, then sprinkle with chocolate pieces.", "Swirl batter with a knife.", "Bake at 350 degrees for 20 to 25 minutes.", "Do not overbake."]
["margarine", "sugar", "eggs", "flour", "unsweetened chocolate", "chunky peanut butter", "semi-sweet chocolate"]