Creating the Creamy Mushroom Chicken and Wild Rice Soup is straightforward when you follow these steps:

1. Sauté Chicken: In a large pot, heat olive oil over medium heat. Add the diced chicken and season with salt and pepper. Cook until browned and no longer pink, about 5-7 minutes. Remove the chicken and set aside.
2. Cook Vegetables: In the same pot, add onions and mushrooms. Sauté until the onions are translucent and the mushrooms are browned, about 5 minutes. Add minced garlic and cook for an additional minute until fragrant.
3. Add Rice and Broth: Stir in the rinsed wild rice, thyme, and rosemary. Pour in the chicken broth and bring to a boil.
4. Simmer: Once boiling, reduce the heat to low, cover, and let simmer for 30 minutes, or until the rice is tender.
5. Incorporate Chicken: Add the cooked chicken back into the pot. Stir in the heavy cream and spinach (if using). Let it heat through for another 5 minutes.
6. Adjust Seasoning: Taste and adjust seasoning with salt and pepper as needed.
7. Serve: Ladle the soup into bowls and garnish with fresh parsley if desired.

Following these straightforward steps will allow you to master this incredible soup in no time at all!