MIX first 5 ingredients in medium bowl. Reserve 3 Tbsp. dressing mixture. Cut steak across the grain into 20 slices, each about 1/4 inch thick. Add to remaining dressing mixture; toss to coat. Refrigerate 1 hour to marinate.
REMOVE meat from marinade; discard marinade. Thread meat onto 20 skewers; place on baking sheet.
BROIL 4 to 6 min. or until medium doneness. Meanwhile, mix chili sauce and reserved dressing mixture.
BRUSH meat with chili sauce mixture; place on platter. Sprinkle with sesame seed and onions.