This Tuscan Bean Soup was one of the first soups Robyn Webb learned in a cooking class on a farm in Italy. She simplified it by using canned beans (the original recipe calls for using dried beans), which are perfectly fine. This is similar to minestrone soup, minus the pasta. Be sure to add the balsamic vinegar, it really draws out the flavor of the vegetables and makes the chickpeas taste even richer. Top each bowl with fresh grated Parmesan cheese, if desired.