Mix pasta sauce and tomatoes until blended; spread half onto bottom of 13×9-inch baking dish sprayed with cooking spray
Combine cottage cheese, spinach, Parmesan, seasoning and 1/2 cup mozzarella; spoon into pasta shells. Place in prepared baking dish; top with remaining pasta sauce mixture, cover
Bake 25 min. or until heated through. Top with remaining mozzarella; bake, uncovered, 2 min. or until melted