Add crumbled Italian sausage, Italian seasoning, a generous amount of fresh thyme (no sprigs, just leaves), and red pepper flakes to a large saucepan. Cook on medium heat, regularly stirring to break the sausage.

Once the sausage released juices and is half cooked, add 1 cup of uncooked orzo and minced garlic, and cook, constantly stirring, for about 2 minutes on medium heat to brown the orzo.

Add 5 cups of chicken stock and cubed butternut squash, stir everything well, cover with the lid, bring to a boil, reduce to visible simmer, and cook for about 5 or 10 minutes until the orzo and butternut squash is cooked.

Add spinach to the soup, cover with the lid and let it wilt on low heat, occasionally stirring.

Once the spinach has wilted, remove the soup from the heat and add heavy cream. Stir everything and season with salt and pepper. Add more chicken stock (or water) if the soup is too dense. Add more red pepper flakes, if you like. Top with Parmesan cheese (shaved, shredded, or grated) and fresh thyme.