1Spray 4- to 5-quart slow cooker with cooking spray. In small microwavable bowl, microwave corn uncovered on High 2 minutes or until thawed. In slow cooker, place corn and all remaining stew ingredients; mix well. Cover and cook on Low heat setting 8 to 10 hours (or High heat setting 4 to 5 hours.)
2Divide stew evenly among 6 bowls. To serve, top with avocado, tortilla chips, cilantro and sour cream.