Mix bread crumbs and milk in large bowl; let stand 5 min. Add all remaining ingredients except barbecue sauce; mix just until blended. Shape into 84 (1-inch) balls.
PLACE on rimmed baking sheet sprayed with cooking spray.
Bake 20 min. or until done (160ºF). Transfer to slow cooker. Add barbecue sauce; cover with lid. Cook on LOW 2 to 4 hours (or on HIGH 1 to 2 hours).