In a large pot saute sausage 5-6 minutes until browned. Use a slotted spoon to transfer sausage to a plate and set aside.
In the same pot, add butter and saute onions over medium heat until translucent. Add garlic and saute for another minute until fragrant.
Add chicken broth, water, potatoes, salt, and pepper and bring to a boil. Boil until potatoes are tender. Stir in kale, and heavy cream. Add sausage. Taste and add salt and pepper if needed. Serve garnished with grated parmesan cheese and/or bacon if desired.