In small bowl, blend vinaigrette and steak sauce.
Pour marinade over steak in nonmetal dish.
Cover; refrigerate 1 hour.
Remove steak from marinade.
Grill or broil steak, 4 inches from heat source, for 10 minutes or to desired doneness, basting occasionally with marinade and turning 2 or 3 times.
Thinly slice steak; arrange steak, asparagus and red pepper on lettuce leaves.
Heat marinade to a boil; pour over salad.
Sprinkle with sesame seeds