Heat a large sauce pot over medium heat and add the oil, onions, and garlic. Sauté for 2-3 minutes, then add the sausage to the pot. Brown the sausage and break it apart with a wooden spoon into small pieces.
Once the sausage is brown, add the potato slices, chopped kale, chicken stock, wine, and crushed red pepper. Bring to a boil, reduce heat if needed, and simmer for 15 minutes.
When ready to serve, stir in the cream and parmesan cheese. Then taste and season with salt and pepper as needed.