In small bowl, combine all dressing ingredients; blend well.
Sprinkle steak with garlic salt. Place on broiler pan. Broil 4 to 6 inches from heat for 12 to 16 minutes or until of desired doneness, turning once.
Meanwhile, prepare frozen vegetables according to package directions; drain. Line large serving platter with cabbage.
Cut steak diagonally into 2x1/4-inch slices. In large bowl, combine steak and vegetables. Pour dressing over steak and vegetables; toss to combine. Spoon mixture over cabbage; sprinkle with sesame seed and onions.