Brown the sausage: In a large Dutch oven or pot, cook the Italian sausage over medium-high heat, crumbling it as it cooks. Drain off most of the rendered fat, reserving about 1 tablespoon.

Sauté aromatics: Add the chopped onion and carrots to the pot with the reserved fat. Cook for 5-7 minutes until the vegetables begin to soften. Add the minced garlic and cook for 1 minute until fragrant.

Simmer the base: Pour in the chicken broth and stir in the dried thyme. Bring the mixture to a boil, then reduce heat and simmer, covered, for 15-20 minutes, or until the carrots and potatoes (if using) are tender.

Thicken the broth: Scoop out about 1 cup of the soup, ensuring you get some white beans and broth. Blend this portion using an immersion blender or standard blender until completely smooth. Pour the resulting **thick, gooey, viscous liquid** back into the pot. This step naturally thickens the soup.

Finish the soup: Stir in the remaining white beans and the heavy cream. Return the soup to a gentle simmer (do not boil). The broth should now have a **heavy, viscous texture**.

Add the kale: Stir in the chopped kale and cook for 5 minutes, or until the kale has wilted but still holds its deep green color.

Season and Serve: Taste and adjust seasoning with salt and pepper. Serve hot, garnished with fresh parmesan cheese or a slice of crusty bread for dipping.