This hearty, chunky bean soup is the ideal meal for any potluck, football watch party, or family dinner. The Southwestern flavors are strong in this warm and comforting soup. Everyone’s favorite kitchen appliance, the slow cooker, does all the work; you don’t even need to soak the beans, just put them in dry. Instead of a creamy black bean soup, this one is more brothy, like a savory stew.Make this a vegetarian soup by using vegetable broth instead of chicken broth. For a softer bean texture, be sure and add the tomatoes during the last hour of cooking. Set up a toppings bar with different cheeses, tortilla chips, green onions, avocados, etc., and let your guests fix their bowl of soup to fit their style.