- In a 9 x 13 inch baking dish, combine the spaghetti/marinara sauce, water, and tomatoes. Stir in raw pasta.
- Cover with foil and bake at 350 degrees for 45 minutes to 1 hour until pasta is tender.
- Top with cheese and place back in the oven uncovered. Bake a few more minutes until cheese is melted. Serves 4-6.