In a large pot, bring broth, water and Italian seasoning to a boil. Add the tortellini and simmer for 3 minutes. Add carrots and celery and simmer for an additional 4 minutes. Stir in the tomatoes and spinach and simmer for 2 more minutes or until vegetables are tender and the spinach is wilted.Advertisement
Ladle soup into bowls and serve with Parmesan cheese, if desired.