Preheat The Oven Broiler. Grease A Baking Dish. In A Bowl, Mix The Parmesan Cheese, Butter, Mayonnaise, Lemon Juice, Green Onions, Salt, And Hot Pepper Sauce. Arrange The Halibut Fillets In The Prepared Baking Dish. Broil Halibut Fillets 8 Minutes In The Prepared Oven, Or Until Easily Flaked With A Fork. Spread With The Parmesan Cheese Mixture, And Continue Broiling 2 Minutes, Or Until Topping Is Bubbly And Lightly Browned