Roasted Cod and Potatoes

Step 1

Heat oven to 400 degrees. Peel potatoes, and cut them into slices about 1/8-inch thick (a mandoline comes in handy here). Toss the potatoes in an 8-by-12-inch or similar size baking pan with 4 tablespoons of the oil or butter. Season the potatoes liberally, spread them evenly and place the pan in the oven.

Step 2

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. Remove the potatoes from the oven. Turn on the broiler, and adjust the rack so that it is 4 to 6 inches from the heat source.

Step 3

Top the potatoes with the fish, drizzle with the remaining oil or butter and sprinkle with some more salt and pepper. Broil until the fish is done, 6 to 10 minutes, depending on its thickness (a thin-bladed knife will pass through it easily). 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.