Heat oven to 350°F. Spray 3-quart casserole with cooking spray.
Cook and drain pasta as directed on package. Stir in cooking sauce, sausage, tomatoes and 1/2 cup of the cheese. Cover and bake 20 minutes. Uncover; continue baking 10 to 15 minutes or until hot in center and bubbly around edges. Sprinkle with remaining cheese during last 5 minutes of baking.