Heat the oil in a large pot over medium heat and saute onions, carrot, celery, peppers and garlic for 10-12 minutes until vegetables are softened but not browned. Add chopped chipotles (amount depending on desired "heat"), oregano, cumin, chili powder and salt. Stir to blend. Add tomatoes and water. Gently simmer over low heat, uncovered for 45 minutes. Add beans and simmer an additional 30 minutes. Garnish individual bowls with optional toppings.

Photo and Recipe Courtesy of Whole Foods Market.