Brown 16oz of Italian sausage in a large pot or Dutch oven over medium heat
Transfer browned Italian sausage into a bowl and set aside
Add 4 tablespoons of butter and 1 diced yellow onion into the pot and cook for 5-7 minutes
Add 4 cloves of minced garlic, 1 tablespoon of onion powder, 2 teaspoons of garlic powder, 2 teaspoons of salt and 1 teaspoon of black pepper into the pot and cook for 60 seconds, stirring constantly
Add 1 cup of chicken stock into the pot and use a wooden spoon to scrape up any brown bits on the bottom or sides of the pot
Add the remaining 5 cups of chicken stock and 1 cup of water and bring the soup to a boil
Add the cubed potatoes into the soup and cook until tender (about 10 minutes)
Once the potatoes are tender, add 2 cups of heavy cream, the browned Italian sausage and chopped kale into the soup and stir to combine
Simmer for about 10 minutes
Serve hot and garnish with finely shredded parmesan