Spicy Healthy Taco Bean Soup

This is a great, healthy recipe that I originally got from a weight watchers meeting, but that I didn't actually try myself until a coworker made it for a faculty lunch. It's amazing how the refried beans thicken the soup and give it more body than the broth alone. It's super tasty, but quite spicy. I cut the spice by topping individual servings with fat free sour cream and shredded cheese. You could also replace the spicy diced tomatoes with an additional can of regular tomatoes if you don't like so much heat. Another way to reduce the heat would be to add an additional can of chicken broth and more beans, either more black beans or a can of kidney beans. Don't like it meatless? Stir in some browned ground beef or turkey, or add some cubed or shredded cooked chicken. Note: After reorganizing my pantry, I realized I have two similar types of tomatoes, and that I have used Mexican style diced tomatoes the last couple of times I made this, which likely made this more spicy than the rotel style tomatoes would have.