Sprinkle each steak all over with 1 teaspoon of the Essence. Pound in once or twice with the side of a heavy knife or the palm of your hand.
Heat the oil in a large skillet over high heat. When the oil is very hot, add the steaks and sear them on the first side for about 4 minutes. Turn the steaks and sear the second side for 2 minutes. Add the mushrooms, onions, green onions, garlic, salt, pepper, and the remaining 1 teaspoon Essence and cook for 2 minutes.
Turn the steaks back to the first side, dot with the butter pats, cover the skillet, and cook for 1 minute. Remove from the heat.
To serve, place 1 steak on each of 4 plates and cover each with 3/4 cup mushrooms and their juices.
Yield: 4 main-course servings