Step 1

Heat oven to 325°F.

Step 2

Line 13x9-inch pan with foil, with ends of foil extending over sides; spray with cooking spray. Prepare brownie batter as directed on package; pour into prepared pan.

Step 3

Bake 25 min. or until top is shiny and center is almost set. (Do not overbake.)

Step 4

Beat cream cheese, sugar and vanilla in medium bowl with mixer until blended. Add eggs, 1 at a time, mixing on low speed after each just until blended. Pour over brownie layer in pan. Evenly scatter cookie dough pieces over batter.

Step 5

Bake 30 min. or until center of cheesecake layer is almost set. Cool completely. Refrigerate dessert 4 hours.

Step 6

Use foil handles to remove dessert from pan just before serving. Melt chocolate chips as directed on package; drizzle over dessert. Refrigerate 15 min. or until chocolate is firm.