Butter dish for broiler. Place fish (orange roughy, etc.) in dish. Brush with 2 tablespoons lemon juice. Let stand 10 minutes. While waiting combine:

1/2 c. Parmesan cheese
4 tbsp. butter, softened
3 tbsp. mayonnaise
3 tbsp. green onions, chopped
1/2 tsp. salt
Dash pepper
Dash Tabasco

Broil fillets 3 to 4 inches from heat for 5 minutes. Spread mixture over fillets. Broil 2 to 3 minutes.