Place the beans, leeks and water in a 1-qt. microwave-safe bowl. Cover and microwave on high until tender, 4-5 minutes., In a blender, process bean mixture and spinach until smooth. Return to the bowl; add cheeses and seasonings. Whisk in cream. Cover and microwave on high until heated through, stirring once, 2-3 minutes. Sprinkle with onions and bacon and, if desired, chopped cilantro.