Lighter, Better Broccoli-Cheddar Soup

Broccoli-Cheddar soup is something I always want to make but never do. With heaps of cheese, half and half, butter, and sometimes bacon, recipes, at a glance, often more resemble Super Bowl queso than soup. So when I saw this recipe on Bon Appetit, I was intrigued. For one, it calls for water, as opposed...