1
Rinse and clean the beans, making sure to remove any debris. If desired, you can soak beans overnight but this isn't necessary. Add the beans, onion, bell peppers, garlic, diced tomatoes, taco seasoning, and bay leaf to the slow cooker. Depending on the taco seasoning, you may need additional salt and pepper, but it can be added later. Add the boiling vegetable broth and stir. Cook on low for 8-10 hours until beans are render.
3
At this point, you have a few options. You can leave it as is, blend all of it for a smooth soup, or blend half of it for a creamier soup that still has some texture. Serve with avocado, queso fresco, cilantro, sour cream or Greek yogurt, and any other toppings you like.