Preheat broiler to high setting. Season you steak on each side with the steak seasoning. Broil on each side for 4-6 minutes preside until you’ve reached your desired doneness ( I like my steak mediumish, so about 145 degrees.) Remove from the broiler and let rest while you prepare the salads and dressing.
In 4 separate bowls, divide the romaine lettuce, tomatoes, avocado, onions and blue cheese crumbles. Set aside.
In a blender or small food processor, combine the dressing ingredients and pulse to combine. Taste for seasoning and add more salt and pepper if needed.
Thinly slice your steak on a bias and place on top of each salad. Top with dressing and extra cheese or fried onions if desired. Serve immediately.