Classic French Potato Gratin

1.Preheat your oven to 350°F (175°C).

2.Butter a 9x9 inch (23x23 cm) baking dish thoroughly to prevent sticking.

3.In a medium saucepan, combine the heavy cream, whole milk, minced garlic, chopped thyme, salt, black pepper, and nutmeg. Warm the mixture over medium heat until it just begins to simmer, then remove from heat.

4.Arrange a layer of sliced potatoes evenly in the bottom of the prepared baking dish, slightly overlapping each slice.

5.Pour a small amount of the warm cream mixture over the potato layer to moisten it.

6.Sprinkle a generous handful of grated Gruyère cheese evenly over the potatoes.

7.Repeat layering with the remaining potatoes, cream mixture, and Gruyère cheese, finishing with a layer of cheese on top.

8.Cover the baking dish tightly with aluminum foil and bake in the preheated oven for 45 minutes.

9.Remove the foil and continue baking for an additional 25-30 minutes, or until the top is golden brown and the potatoes are tender when pierced with a fork.

10.Allow the gratin to rest for 10 minutes before serving to let it set and cool slightly.

11.Garnish with freshly chopped parsley if desired, and serve warm as a rich side dish or a comforting main course.