HEAT oven to 350°F.
COMBINE chicken and garlic in large bowl. Add spinach, cottage cheese, egg whites and 1/4 cup mozzarella; spoon into manicotti shells.
PLACE in 13x9-inch baking dish sprayed with cooking spray. Cover with spaghetti sauce.
BAKE 25 to 30 min. or until heated through. Top with remaining mozzarella; bake 5 min. or until melted. Sprinkle with basil.