Spray 3 1/2- to 4-quart slow cooker with cooking spray. Add beef, onion, carrot, celery, garlic, sugar, tomatoes and broth to cooker in order listed.
Cover; cook on Low heat setting 8 to 9 hours.
About 25 minutes before serving, stir in basil, frozen tortellini and green beans. Increase heat setting to High. Cover and cook about 25 minutes or until beans are tender.