Creating Potato Soufflé can be straightforward if you follow these simple steps:

1. Preheat the Oven: Preheat your oven to 375°F (190°C). Grease a soufflé dish or a baking dish with butter.
2. Cook the Potatoes: In a large pot, boil the diced potatoes in salted water until fork-tender, about 15-20 minutes. Drain and let cool slightly.
3. Make the Potato Mixture: In the same pot, add the butter to the drained potatoes. Mash until smooth and creamy. Stir in the milk, cheese, salt, pepper, and nutmeg (if using) until well combined.
4. Whip the Egg Whites: In a separate bowl, beat the egg whites until stiff peaks form. This will add volume and lightness to your soufflé.
5. Combine Mixtures: Gently fold the beaten egg whites into the potato mixture. Be careful not to deflate the egg whites to maintain the soufflé’s airy texture.
6. Transfer to Dish: Pour the combined mixture into the prepared soufflé dish, smoothing the top with a spatula.
7. Bake: Place in the preheated oven and bake for 30-35 minutes, or until the soufflé is puffed and golden brown on top.
8. Serve Immediately: Once baked, remove from the oven and serve right away for the best texture.

These clear steps will guide you in creating a delightful Potato Soufflé that impresses everyone at your table.