Combine 1 1/2 cups of water with spaghetti sauce in a bowl. Cover bottom of 13 x 9 x 2-inch baking dish with 1 1/2 cups sauce. Arrange 4 (uncooked) noodles on top of the sauce. Spread with half of the ricotta and half the mozzarella cheese. Sprinkle with 2 tablespoons Parmesan cheese. Add another layer of sauce, repeat layer of noodles and remaining ricotta and mozzarella cheese. Sprinkle with 2 tablespoons grated Parmesan. Place last 4 noodles, cover with remaining sauce, spreading to cover noodles. Sprinkle with 4 tablespoons of Parmesan. Cover tightly with foil, set in a jelly roll pan. Bake at 350 degrees for 1 hour and 15 minutes, let sit for 15 minutes before serving.