Start by washing and peeling the potatoes. Thinly slice them, ensuring uniform thickness for even cooking.

Take 2 tablespoons of butter and generously grease your baking dish.

Place half of the sliced potatoes at the bottom of the greased baking dish.

Sprinkle half of the minced garlic, salt, and pepper over the first layer of potatoes.

Add half of the grated cheddar and Gruyere cheeses over the first layer.

Repeat the process by adding the remaining sliced potatoes, followed by the remaining garlic, salt, pepper, and cheese.

Pour the heavy cream over the layered potatoes.

Cover the baking dish with aluminum foil and bake in a preheated oven at 375°F (190°C) for 45 minutes.

Remove the foil and allow it to bake for an additional 15 minutes to achieve a golden-brown crust.

Let the dish rest for about 10 minutes before slicing and serving.