In a large pot, cook the Italian sausage over medium heat. Once the sausage is cooked through, remove it from the pot and set aside.

Add the onions, garlic, carrots, and celery. Sauté for about 5 minutes or until the onions are translucent.

Add the seasonings and dust the vegetables with flour. Allow to cook for 10 minutes, stirring continuously.

Add the chicken broth and bring to a boil.

Once the soup is boiling, add the tortellini and cook for 8 minutes or until desired tenderness.

Turn heat down to medium and add the spinach and half and half. Cook for an additional 5 minutes.

Serve warm.