Slow-Cooker Sausage And White Bean Soup

Optional: In a medium skillet over medium heat, heat oil. Add sausage and cook until golden on both sides, 4 to 5 minutes. Remove and place in slow cooker. Combine white beans, garlic, onion, carrots, celery, thyme and bay leaves into the slow cooker with the sausage. Season with salt and pepper. Add chicken broth and water and stir to combine. Cook on low for 6 to 7 hours or high for 3 to 4 hours. Stir in kale and cook 10 to 15 minutes more on high, or until kale is completely wilted. Remove bay leaf and thyme. Top with freshly grated Parmesan before serving.