Combine mayonnaise, 1 tablespoon of lemon juice, garlic, mustard, parmesan, green onion and Tabasco sauce.
Place the fish on a broiling pan covered with tin foil. Sprinkle the fillet with 1 tablespoon of lemon juice and season with salt and pepper.
Place the halibut in the preheated oven and bake for 12 minutes or until fish is flaking with a fork. Remove from oven and place rack close to the broiling element. Turn the oven to broil.
Spread the top of the halibut with the prepared Parmesan sauce and broil until a golden crust forms.