01 - Heat olive oil in a large soup pot or Dutch oven over medium heat. Add the sausage with casings removed and cook, breaking it apart with a spoon, until thoroughly browned. Transfer the sausage to a plate using a slotted spoon, leaving the rendered fat in the pot.
02 - Add the diced onion, sliced carrots, and sliced celery to the pot. Cook for 5 minutes, stirring occasionally, until the vegetables are softened. Add the minced garlic and cook for 1 additional minute until fragrant.
03 - Stir in the cubed butternut squash, dried thyme, ground nutmeg, and half of the chopped fresh sage. Season with salt and pepper to taste. Sauté for 2 to 3 minutes, allowing the squash to lightly caramelize and absorb the seasonings.
04 - Pour in the chicken broth and bring to a boil. Once boiling, reduce the heat to a simmer, cover the pot, and cook for 20 minutes until the squash is fork-tender.
05 - Use an immersion blender to purée part or all of the soup for a creamy, velvety base. Leave some chunks intact if you prefer a heartier, more rustic texture.
06 - Return the browned sausage to the pot. Stir in the cheese tortellini and simmer uncovered for 6 to 8 minutes until the tortellini is cooked through and tender.
07 - Stir in the heavy cream and the remaining chopped fresh sage. Heat gently without boiling. Taste and adjust the seasoning with additional salt and pepper as needed. Remove from heat.
08 - In a mixing bowl, blend the softened cream cheese, ricotta cheese, finely chopped fresh sage, milk, and a pinch of salt and pepper until completely smooth and creamy.
09 - Ladle the hot soup into serving bowls. Add a generous spoonful of the sage cheese mixture to each bowl and swirl gently with a spoon or knife to create a marbled effect. Garnish with extra fresh sage leaves or cracked pepper and serve immediately.