Step-by-Step Instructions:
Preheat the oven to 375°F (190°C). Butter a baking dish.
- In a saucepan, heat the heavy cream with minced garlic, salt, pepper, and a pinch of nutmeg.
- Arrange a layer of potato slices in the bottom of the prepared dish.
- Pour some of the cream mixture over the potatoes.
- Sprinkle a layer of Gruyère and Parmesan cheeses.
- Repeat the layers until all ingredients are used, finishing with a layer of cheese.
- Cover with foil and bake for 45 minutes.
- Remove the foil and bake for an additional 15 minutes or until the top is golden and bubbly.
- Let it cool for a few minutes before serving.
