PREHEAT oven to 350º F. Grease 13 x 9-inch baking dish or pan.
CUT or break each bar into pieces along pre-scored lines (you should have 40 pieces for each flavor). Arrange about 2/3 of chocolate chip dough pieces in a pumpkin shape in center of prepared dish, leaving about a 1/2-inch space between pieces. Don’t fill in spaces for the eyes, nose and mouth. Fill these spaces with brownie dough pieces. Surround pumpkin with brownie dough pieces and remaining chocolate chip dough pieces along the short sides of dish. Pieces can be molded for a neater design. As the treat bakes, the dough will spread out to fill the dish!
BAKE for 25 to 27 minutes or until wooden pick inserted in center comes out clean. Cool completely in dish on wire rack.
VARIATION: Use dough of one flavor to form initials, short words or other shapes such as a heart, then surround with the other flavor of dough. Bake as directed above.