Peanut Butter Paisley Brownies
["1/2 c. butter, softened", "1/4 c. peanut butter", "1 c. sugar", "1 c. packed light brown sugar", "3 eggs", "1 to 2 c. chocolate chips", "1 tsp. vanilla", "2 c. unsifted flour", "2 tsp. baking powder", "1/4 tsp. salt", "1/2 c. Hershey's syrup"]
["Blend butter and peanut butter in large mixing bowl.", "Add sugar and brown sugar; beat well.", "Add eggs, one at a time, beating well after each addition.", "Blend in vanilla.", "Combine flour, baking powder and salt; add to peanut butter mixture.", "Add chocolate chips.", "Spread half the batter in greased 13 x 9-inch pan.", "Spoon syrup over top.", "Carefully spread with remaining batter.", "Swirl with spatula or knife for marbled effect."]
["butter", "peanut butter", "sugar", "brown sugar", "eggs", "chocolate chips", "vanilla", "flour", "baking powder", "salt", "syrup"]