01 - 
                In a skillet, cook the Italian sausage until browned, if using. Drain excess fat and set aside.
              
              
              
                02 - 
                In a crockpot, combine chicken broth, heavy cream, Parmesan cheese, garlic powder, Italian seasoning, and black pepper. Add the browned sausage (if using) and spinach.
              
              
              
                03 - 
                Cover and cook on low for 3-4 hours.
              
              
              
                04 - 
                Stir in the tortellini and mozzarella cheese. Cook on high for an additional 30 minutes, until the tortellini is tender and the cheese is melted.
              
              
              
                05 - 
                Serve warm with extra Parmesan cheese on top.