To make this One Pot Hearty Lasagna Soup gluten free, use gluten-free lasagna noodles or another gluten-free pasta shape in place of traditional lasagna noodles. You should also confirm that the pasta sauce, chicken broth, Italian sausage, tomato paste, diced tomatoes, and balsamic vinegar are labeled gluten free, since some brands may contain additives or thickeners with gluten. If cross-contact is a concern, use a clean pot and utensils that have not been used with regular pasta. Once the pasta is swapped, this soup is very easy to adapt.