(If needed, cook the dried navy beans. Drain.)
In a large Dutch oven or soup pot, add the liquid, then add the carrots, diced tomatoes, spinach, beans, garlic, onion and seasoning. Bring to a rolling boil.
Once boiling, add the orzo pasta and let cook for 7-8 minutes.
Ladle into serving bowls and add a little Parmesan cheese to each bowl.
Serve as is, or with a side salad or bread.