Instructions

  1. In a mixing bowl, combine butter and sugars.
  2. Add eggs and milk; mix well.
  3. Combine flour, baking powder, and salt; add to creamed mixture and mix well.
  4. Divide batter in half.
  5. To one portion, add peanut butter and peanut butter chips.
  6. To the other portion, add cocoa and chocolate chips; mix well.
  7. In a greased 9-inch square pan, spoon chololate batter into 8 mounds in a checker board pattern.
  8. Spoon 8 mounds of peanut butter batter in between the chocolate batter.
  9. Cut through batter with a knife to swirl.
  10. Bake at 350F for 25-30 minutes or until toothpick interted near the center comes out clean.
  11. Cool on a wire rack.