COOK bacon in large saucepan on medium heat 12 min. or until crisp, stirring frequently. Drain bacon, reserving 3 Tbsp. of the drippings in pan. Drain bacon.
MEANWHILE, add onions, celery, carrots and garlic to bacon drippings in saucepan; cook and stir until crisp-tender. Stir in beans, broth and pepper. Simmer 15 min., stirring occasionally.
POUR soup into food processor or blender container; cover. Process until pureed. Return to saucepan. Stir in bacon; cook until heated through, stirring occasionally.