This healthy and delicious vegetarian chili recipe made with black beans and lots of veggies cooks in your slow cooker. It's easy to make and colorful too. You can use other types of beans in this chili recipe if you'd like. Try using pinto beans, or kidney beans, or even garbanzo beans for a nice change of pace. By the way, any chili recipe really combines already cooked ingredients. Cooking blends together and enhances the individual flavors.