1. In 4-quart saucepot, heat oil over medium heat and cook onion, yellow pepper and cumin seeds, stirring occasionally, 8 minutes or until vegetables are tender. Stir in chipotle pepper and cook 1 minute. Stir in remaining ingredients.
2. Bring to a boil over high heat. Reduce heat to medium and cook 15 minutes or until thickened, stirring occasionally.
3. Garnish, if desired, with chopped fresh cilantro, sliced green onions, sour cream and fried tortilla strips.