Peanut Butter Swirl Brownies

1/2 cup butter or margarine, softened
2/3 cup sugar
1/2 cup packed brown sugar
2 eggs
2 TBSP milk
3/4 cup all-purpose flour
1/2 tsp baking powder
1/4 tsp salt
1/4 cup creamy peanut butter
1/3 cup peanut butter chips
1/3 cup baking cocoa
1/2 cup semisweet chocolate chips

In a mixing bowl, cream butter and sugars. Add eggs and milk; mix well.
Combine flour, baking powder and salt; add to creamed mixture and mix well.
Divide batter in half. To one portion, add peanut butter and peanut butter chips; mix well.
To the other portion, add the cocoa and chocolate chips; mix well.
In a greased 9-inch square baking pan, spoon chocolate batter in eight mounds in a checkerboard pattern. Spoon seven mounds of peanut butter batter between the chocolate batter.
Cut through batters with a knife to swirl.
Bake at 350*F for 25-30 minutes or until a toothpick inserted near the center comes out clean.
Cool on a wire rack.
Yield:3 dozen