Soak two thick boards of cedar or wood plank of choice and soak them in cold water for at least 1 hour.
Center fish on the boards. Brush with oil; season with black and cayenne pepper, salt and herbs.
Place them in a 350F oven and back for 20 minutes or the fish starts to flake in the thickest part. Planks may also be broiled on a grill, place 6 to 7 inches from the heat source and cook for similar amount of time.