Garlic Parmesan Baked Halibut

I have to start out saying that this was delicious and so easy but WOW Halibut is expensive!  It's a keeper but next time, I want to try with cod and will come back with  my thoughts.  Recipe adapted from the blog Port and Fin.  Ingredients:

• Salt and pepper, to taste
• ½ lemon, juiced
• 2 halibut filets (1" thick)
• 
  
• Topping Ingredients: (Have topping ingredients mixed, ready to top fish when it comes out of the oven)
• 2 Tablespoons butter, softened
• 2 Tablespoons mayonnaise
• 1/4 cup freshly grated Parmesan cheese
• 2 Tablespoons green onion, finely sliced
• 2 cloves garlic, minced or grated
• Dash of Tabasco/Hot sauce

1. Preheat oven to 425. Season halibut with salt, pepper and a squeeze of lemon juice. Place filets on lined baking dish lined with foil (for easy cleanup). Bake for 6 minutes.
2. Mix all topping ingredients together. Remove halibut from oven and spread Parmesan mixture over top of fish. Turn oven to broil and cook for 2-3 minutes (watch carefully not to burn), until the tops are lightly browned. Serve immediately.