Spray large, heavy stockpot with nonstick cooking spray; heat onion and celery mixture until soft (3 to 4 minutes).
Add half of the beans (3 cups), all tomatoes, green chiles and water. Using a food processor or stick blender, process mixture until smooth.
Add remaining beans, Ultimate White Cheese Sauce, cilantro, cumin, pepper and water. Stir to combine. Continue heating over low heat, stirring occasionally until heated through. Heat to 165°F for 15 seconds. Serve with dollop of light sour cream and chopped parsley or cilantro, if desired.
CCP: Heat to 165°F for at least 15 seconds
CCP: Maintain hot food at 135°F or above