This slow-cooker sausage and kale stew is a hearty and comforting dish that is perfect for chilly nights. The stew is made with flavorful Italian sausage, tender kale, and a rich tomato broth. It is slow-cooked to perfection, allowing the flavors to meld together and the kale to become tender. Serve this stew over a bed of creamy olive oil mashed potatoes for a complete and satisfying meal.