POUR marinade over steak in shallow dish; turn to coat both sides of steak. Refrigerate 30 min. to marinate. Meanwhile, blend remaining ingredients in blender until smooth. Pour into bowl; refrigerate until ready to serve.
HEAT broiler. Remove steak from marinade; discard marinade. Place steak on rack of broiler pan sprayed with cooking spray.
BROIL, 4 inches from heat, 10 min. or until steak is medium doneness, turning after 5 min. Diagonally cut steak across the grain into thin slices. Serve with parsley mixture.