Mash 1/2 cup of the drained beans; set aside. Heat oil in large saucepan over medium-high heat until hot. Add carrots, celery, onion and garlic; cook 3 to 4 minutes or until vegetables are crisp-tender, stirring frequently.
Add all remaining ingredients including mashed and whole beans. Bring to a boil. Reduce heat; simmer 10 to 12 minutes or until vegetables are tender.