Creating a delightful bowl of Sausage and Tortellini Soup is straightforward. Follow these simple steps to make your dish:

1. Brown the Sausage: In a large pot, over medium heat, cook the Italian sausage until browned. Break it up into crumbles as it cooks.
2. Add Vegetables: Once the sausage is cooked, add the diced onion, garlic, carrot, and celery. Sauté until the vegetables are softened, about 5 minutes.
3. Stir in Broth and Tomatoes: Pour in the chicken broth and add the canned diced tomatoes (with juice). Stir to combine.
4. Season the Soup: Add oregano, red pepper flakes (if using), salt, and pepper. Adjust seasoning according to your taste preferences.
5. Bring to a Boil: Raise the heat and bring the soup to a gentle boil. Allow it to simmer for 5 minutes.
6. Add Tortellini: Stir in the cheese tortellini and cook for an additional 5-7 minutes, or until the tortellini are tender and cooked through.
7. Incorporate Spinach: Add the fresh spinach to the pot and stir until it wilts, about 1-2 minutes.
8. Adjust Consistency: If the soup is too thick, add more chicken broth or water to reach your desired consistency.
9. Taste and Serve: Taste the soup for flavor adjustments. Serve hot in bowls, garnished with grated Parmesan cheese and fresh parsley.

Following these steps will lead to an incredible Sausage and Tortellini Soup that’s sure to be a family favorite.