In a large pot, heat oil. Add meat and saute until meat is browned and cook thoroughly.
Add onion and garlic. Saute until onion is translucent, 2-3 minutes.
Add broth, water and tomatoes. Bring to a boil.
Add tortellini and cook for 8 minutes.
Add spinach, basil, black pepper, crushed red pepper and salt. Cook, stirring continuously just until spinach wilts, about 1 minute.
To serve, garnish with grated cheese.