This is a great recipe from allrecipes.com.  According to http://www.allrecipes, this makes 8 servings and is less than 1 net carb per serving.  I think this makes closer to 4 servings and is around 2 net carbs per serving.  🙂  I used the frozen halibut from Costco.

INGREDIENTS:

• 1/2 cup grated parmesan cheese
• 1/4 cup butter, softened
• 3 tablespoons mayonnaise
• 2 tablespoons lemon juice
• 3 tablespoons finely chopped green onions
• 1/4 teaspoon salt
• 1 dash hot pepper sauce
• 2 pounds skinless halibut fillets

DIRECTIONS:

1. Preheat the oven broiler.  Grease a baking dish.
2. In a bowl, mix the parmesan cheese, butter, mayonnaise, lemon juice, green onions, salt and hot pepper sauce.
3. Arrange the halibut fillets in the prepared baking dish.
4. 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.