In this recipe the flavourful sausage is simmered in a pesto chicken broth with carrots, potatoes and corn, so plenty of flavours going on. I have also added cheddar cheese to make this soup rich and velvety. Another cheese that goes well in this soup is mozzarella or provolone. To finish the soup, I added fresh basil for extra flavour. This potato and sausage pesto soup is one of those warming soups that is great for just about any night of the week. It's simple, and it's quick, and you probably have most of the ingredients in your pantry already.