Step 1

Preheat the oven to 350 degrees F (175 degrees C). Cover a baking sheet with aluminum foil and spray it with cooking spray.

Step 2

Season fish fillets with herbs, salt, and pepper. Place on the prepared baking sheet.

Step 3

Mix sour cream, Parmesan cheese, and melted butter together in a small bowl. Apply sour cream mixture to each fillet.

Step 4

Bake in preheated oven until fish flakes easily with a fork, 15 to 25 minutes.