Preheat the oven to 400°F (200°C)
Line a baking sheet with parchment paper or lightly grease it
Pat the fillets dry with paper towels
Season both sides with salt, pepper, and any desired spices or herbs
Brush or drizzle the fillets with oil or melted butter
Place the fillets on the prepared baking sheet in a single layer
Bake for 10 to 15 minutes, depending on thickness
Check for doneness; the fillets should flake easily with a fork
Remove from the oven and let rest for a few minutes
Serve immediately