Roasted Cauliflower and Gruyere Soup

  Another weekend with temperatures in the teens.  Another pot of soup.  I've actually been eating soup almost every day this winter but a lot of times I just get lazy and toss everything in a pot.  The result is good and warm and comforting.  But, when I take the time to do it right, I can develop layers of deep flavor. Take this soup, for example.  I've made cauliflower soup by just