In a LARGE soup pot, saute sausage with a little bit of oil over medium-high heat.
Bring to a boil, then reduce heat to low and simmer for a minimum of 20 minutes (or until all veggies are tender).
While simmering, work on the cheese sauce (below).
Pour cheese sauce into the soup, stir, and serve!
Feel free to garnish this soup with some crispy chopped up bacon and a sprinkle of cheddar cheese.