In a saucepan, combine one cup of heavy cream, half a cup of whole milk, minced garlic, dried thyme, butter, salt, and black pepper. Heat the mixture over medium heat until warmed through and the butter is melted, being careful not to let it boil. This creamy concoction will infuse your dish with rich, savory flavor.
Layering the Ingredients
Grease a baking dish and start layering! Place a single layer of potato slices on the bottom, slightly overlapping them for maximum coverage. Sprinkle a generous portion of grated Parmesan and Gruyere cheeses over the potatoes, followed by a drizzle of the creamy mixture. Repeat these layers until you’ve used up all the ingredients, finishing with a final layer of cheese and cream on top.
Baking to Perfection
Cover the baking dish with aluminum foil and bake in a preheated oven at 375°F (190°C) for 45-50 minutes. Remove the foil and continue baking for an additional 15-20 minutes, or until the top is golden brown and the potatoes are tender. The aroma wafting from your oven will be simply irresistible!