Follow these simple steps to create your Creamy Chicken Tortellini Soup, ensuring a delicious result every time:

1. Heat the oil: In a large pot, heat the olive oil over medium heat.
2. Sauté the vegetables: Add the diced onion, carrots, and celery. Sauté for about 5 minutes, or until the vegetables are tender.
3. Add garlic: Stir in the minced garlic and cook for an additional minute until fragrant.
4. Cook chicken: Place the chicken breasts into the pot and pour in the chicken broth. Bring the mixture to a boil.
5. Simmer: Once boiling, reduce the heat and let it simmer for 10-12 minutes, or until the chicken is cooked through.
6. Shred the chicken: Remove the chicken from the pot, shred it with two forks, and return it to the soup.
7. Stir in cream: Add the heavy cream, frozen tortellini, and Italian seasoning to the pot. Cook for another 5-7 minutes, or until the tortellini are cooked.
8. Season: Taste and adjust with salt and pepper as needed.
9. Add spinach: Stir in the chopped spinach and allow it to wilt for 1-2 minutes.
10. Serve: Ladle the soup into bowls and top with grated Parmesan cheese.

This step-by-step guide will help you create a beautiful and creamy soup that is sure to be a hit!