Preheat oven to 325°. Line 8-inch square baking pan with aluminum foil. Spray generously with no-stick cooking spray; set aside.
Prepare brownie mix according to package directions, stirring in chocolate chips. Pour into prepared pan.
Bake 45 to 50 minutes until toothpick inserted in center comes out with fudgy crumbs. Cool on wire rack about 30 minutes.
Lift brownie out of pan and onto cutting board by foil ends. Cut into 12 squares. Serve each topped with 1/2 cup scoop Breyers® Natural Vanilla Ice Cream.