Emma's Cod

Directions

1. 1
   Preheat oven to 400 degrees.
2. 2
   Peel potatoes, and cut them into slices about 1/8-inch thick (a mandoline comes in handy here).
3. 3
   Toss the potatoes in an 8-by-12-inch or similar size baking pan with 4 tablespoons of the oil or butter.
4. 4
   Season the potatoes liberally, spread them evenly and place the pan in the oven.
5. 5
   Cook for about 40 minutes, checking once or twice, until the potatoes are tender when pierced with a thin-bladed knife and have begun to brown on top.
6. 6
   Remove the potatoes from the oven.
7. 7
   Turn on the broiler, and adjust the rack so that it is 4 to 6 inches from the heat source.
8. 8
   Top the potatoes with the fish, drizzle with the remaining oil or butter and sprinkle with some more salt and pepper.
9. 9
   Broil until the fish is done, 6 to 10 minutes, depending on its thickness (a thin-bladed knife will pass through it easily).
10. 10
    If at any point the top of the potatoes begins to burn, move the pan a couple of inches farther away from the heat source.