01 - In a large soup pot or Dutch oven, heat olive oil over medium heat. Add sausage, breaking it apart with a wooden spoon, and cook until evenly 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 celery to the pot. Cook for about 5 minutes, stirring occasionally, until the vegetables have 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 generously with salt and pepper. Sauté for 2 to 3 minutes to allow the flavors to meld.
04 - Pour in the chicken broth and bring to a boil. Once boiling, reduce the heat to a gentle simmer. Cover the pot and cook for 20 minutes, or until the butternut squash is fork-tender.
05 - Use an immersion blender to purée part or all of the soup for a smooth, creamy consistency. For a chunkier texture, blend only half of the soup and leave the rest intact.
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 - Pour in the heavy cream and add the remaining fresh sage. Heat gently over low, being careful not to boil. Taste and adjust seasoning with salt and pepper as needed. Remove from heat.
08 - In a small mixing bowl, combine the softened cream cheese, ricotta, finely chopped sage, milk, and a pinch of salt and pepper. Blend 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 gently swirl it through the soup using a spoon or knife. Garnish with extra fresh sage or cracked black pepper and serve immediately.