Cook bacon in a large saucepan over medium heat until crisp. Remove bacon from pan with a slotted spoon, reserving 2 teaspoons drippings in pan; set bacon aside. Add onion to drippings in pan; cook 12 minutes or until golden brown, stirring occasionally. Add garlic; cook 2 minutes, stirring frequently. Add escarole, and cook for 2 minutes or until escarole wilts, stirring frequently. Add sugar, salt, pepper, and chicken broth; cook 15 minutes or until escarole is tender, stirring occasionally. Add beans; cook for 2 minutes or until thoroughly heated. Sprinkle with bacon.