Freshly grated lemon zest or freshly squeezed lemon juice (optional)
Thinly sliced fresh basil leaves (optional)
Preheat the oven to 425 degrees.
Pat the fish dry. Place the fillets in a large baking dish or roasting pan and season with salt and pepper to taste. Set aside.
In a small skillet over low heat or in a microwave-safe bowl, melt the butter.
Add the breadcrumbs, cheese and oil and, using your fingers, mix until evenly combined.
Sprinkle the mixture evenly over the fillets.
Bake the filets until they are cooked through and the topping is golden, about 15 minutes.
Let stand for 5 minutes. If desired, sprinkle with lemon zest or juice and basil. (We suggest you don’t skip this.)