Creating an amazing bowl of Spicy Sausage and Tortellini Soup can be straightforward if you follow these steps:

1. Heat Oil: In a large pot, heat 1 tablespoon of olive oil over medium heat.
2. Cook Sausage: Add the spicy Italian sausage to the pot. Use a wooden spoon to break it apart. Cook until browned, about 5-7 minutes.
3. Add Onion and Garlic: Stir in the diced onion and garlic. Sauté for another 2-3 minutes until the onion softens and becomes translucent.
4. Incorporate Carrot: Mix in the diced carrot and continue to cook for an additional 3 minutes.
5. Pour in Broth: Add the chicken broth and diced tomatoes with their juices to the pot. Stir well to combine.
6. Season: Sprinkle in the Italian seasoning and red pepper flakes. Season with salt and black pepper to taste.
7. Bring to Boil: Increase heat and bring the soup to a gentle boil.
8. Add Tortellini: Stir in the cheese tortellini, reduce the heat to a simmer, and cook according to package instructions (usually 3-5 minutes).
9. Stir in Spinach: Once the tortellini is tender, fold in the fresh spinach. Cook for an additional 1-2 minutes until the spinach wilts.
10. Adjust Seasoning: Taste the soup and adjust the seasoning as necessary.
11. Serve: Ladle the soup into bowls. Top with grated Parmesan cheese and a sprinkle of fresh parsley for garnish.

These clear and precise steps will guide you toward creating a flavorful and warming soup easily.