Remove casings from sausage links, crumble, and brown in the Dutch oven (or other large pot) over medium high heat.
Strain the sausage through a fine mesh sieve, catching and reserving the renderings. Set the Italian sausage aside.
Add the reserved renderings or olive oil back to the Dutch oven and cook the chopped mushrooms, minced garlic, and diced onion until they begin to soften and brown.
Over medium high heat, bring the soup to a boil. Allow to cook for 6-8 minutes or until the butternut squash is completely fork tender.
Use an immersion blender to puree everything into a smooth soup base. Stir in the tomato paste.
Reduce to medium heat and return the cooked sausage to the large soup pot along with the cheese tortellini and fresh spinach. Allow to cook until a low simmer begins.
Remove from heat and stir in the heavy cream.
Once combined, return to a low simmer, then serve and enjoy. Garnish with optional grated Parmesan cheese.
Notes
Ned's Notes:
We love cheese tortellini but you can use any filling, sausage, mushroom, spinach and cheese, and so on.
We used sausage renderings to sauté the vegetables, but olive oil, butter, bacon fat, or any cooking oil can be used.
If you want a thinner soup base, you can omit the tomato paste, but then we recommend adding a tablespoon of other Worcestershire sauce or soy sauce to get the umami you'd get from the the tomato paste
Variations:
Sausage: mild, sweet, hot and spicy; chicken or turkey; plant-based are options
Add more vegetables like bell peppers and tomatoes
Use your favorite broth or alternative dairy options.