Making Pommes Anna with Gruyère is a straightforward process that yields delicious results. Follow these steps to create this amazing dish:

1. Preheat the Oven: Preheat your oven to 375°F (190°C).
2. Prepare the Baking Dish: Grease a round baking dish or a cast-iron skillet with some of the melted butter.
3. Wash and Slice Potatoes: Peel the Yukon Gold potatoes and slice them thinly, about 1/8 inch thick. A mandoline slicer can help achieve uniform slices.
4. Layer the Potatoes: Begin layering the potato slices in the prepared dish, overlapping them slightly. Season each layer with salt and pepper, and drizzle a little melted butter over the top.
5. Add Gruyère: After every few layers, sprinkle a layer of grated Gruyère cheese for added flavor.
6. Continue Layering: Repeat the process until all the potatoes are used, finishing with a layer of potato slices on top.
7. Drizzle with Butter: Pour the remaining melted butter over the top layer of potatoes for extra crispiness.
8. Cover and Bake: Cover the dish with aluminum foil and bake in the preheated oven for about 30 minutes.
9. Uncover and Crisp: After 30 minutes, remove the foil and bake for an additional 30 minutes, or until the top is golden brown and crispy.
10. Let Cool: Once cooked, remove the dish from the oven and let it cool for a few minutes before slicing.

Following these steps will help you create a fantastic Pommes Anna with Gruyère that your guests will rave about.