In a large kettle or Dutch oven break up and cook ground beef until no longer pink inside. Drain if needed.
Add the tomatoes to the meat and stir in the water, elbow macaroni, Italian seasoning, onion soup mix, and red pepper flakes. Bring mixture to a boil and reduce heat to a high simmer. Cook covered, stirring occasionally until macaroni is tender. Off heat; Stir in the shredded Parmesan and top with the Mozzarella cheese. Cover and let rest until cheese is melted. (I sprinkled the Mozzarella cheese on each dish as I served it.)