01 - Peel and slice the potatoes into thin, even pieces.
02 - Preheat the oven to 180°C (356°F). Grease a baking dish with a small amount of butter.
03 - Layer the potato slices in the baking dish. Pour heavy cream over the potatoes. Sprinkle nutmeg and cheese evenly across each layer.
04 - Place the baking dish in the oven and bake for 45-50 minutes, or until the top is golden brown and the potatoes are tender.
05 - Let the gratin cool slightly before serving as a creamy, comforting side dish.