Cauliflower Leek Soup

unsalted butter

all purpose flour (use ap gluten-free flour for GF)

reduced sodium chicken or vegetable broth

bunch leeks (about 3 or 4) dark green stems removed

medium head cauliflower, chopped (about 1 1/2 lbs florets)

kosher salt and fresh pepper

(optional toppings:) crumbled bacon, cheddar, scallions (extra)