In a large skillet over medium heat, combine sausage, onion, and green pepper. Cook until sausage is browned and onion is tender. Drain off pan drippings.
In a medium bowl, combine tomatoes, sour cream, water, Italian seasoning; mix well. Combine tomato mixture and noodles into skillet.
Cover and simmer 15 minutes or until noodles are tender, stirring occasionally. Sprinkle with parmesan cheese.
