1/2 cup Parmesan cheese -- I used finely shredded, I'm sure you can use other kinds
1/4 butter, softened -- Melted 1/2 stick of unsalted butter in the microwave for 45 seconds
3 tablespoons mayonnaise
2 tablespoons fresh lemon juice
1/4 teaspoon dried basil
1/4 teaspoon ground black pepper
1/8 teaspoon onion powder
1/8 teaspoon celery salt
2 lbs. tilapia fillets -- I used frozen fish from Wal-Mart.