1 lb. fish fillets
4 Tbsp. mayonnaise
1 green onion
1/4 c. grated Parmesan cheese
1 Tbsp. lemon juice
2 Tbsp. melted butter

Broil fillets 8 to 12 minutes. Combine remaining ingredients and spread over fish. Broil until puffy and golden, 1 to 3 minutes more. Or, can put on when you put the fish under the broiler.