Peanut Butter Brownies

1/2 cup butter (softened) 1/4 cup creamy peanut butter 1 cup granulated sugar 1 cup packed light brown sugar 3 eggs 1 tsp. vanilla extract 2 cups all-purpose flour 2 tsp. baking powder 1/4 tsp. salt 1/2 cup Hershey's Chocolate Syrup Heat oven to 350F. Grease 13x9x2-inch baking pan. In a large mixer bowl, beat butter and peanut butter. Add granulated sugar and brown sugar, beat well. Add eggs, one at a time, beating well after each addition. Blend in vanilla. Stir together flour, baking powder and salt; mix into peanut butter mixture, blending well. Spread half of batter into prepared pan. Spoon syrup over top. Carefully spread with remaining batter. Swirl with metal spatula or knife for marbled effect. Bake for 35 to 40 minutes or until lightly browned. Cool completely in pan on wire rack. Cut into squares. Makes about 30 brownies.