In small bowl, stir together butter, minced green onion, minced parsley, salt and garlic until well-combined. Form into a log shape, wrap in plastic wrap, and refrigerate 1 hour or until ready to serve.
Preheat broiler to high. Position rack 6” below heat source.
Sprinkle steaks evenly with salt and pepper on both sides; place on broiler pan. Place vegetables around steaks. Broil 3 minutes. Turn steaks over; broil 5 minutes longer, or until steaks reach desired degree of doneness.
Slice herb butter into 4 equal portions. Place one piece butter on each steak; tent with foil and let rest 5 minutes before serving.