1. Preheat the Oven:

• Preheat your oven to 375°F (190°C).

 

2. Prepare the Potatoes:

• Peel the potatoes and thinly slice them using a mandoline or a sharp knife.

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3. Prepare the Cast Iron Skillet:

• Rub the bottom and sides of a cast iron skillet with a clove of garlic. This adds a subtle garlic flavor to the dish.

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4. Layer the Potatoes:

• Arrange a layer of sliced potatoes in the bottom of the skillet, slightly overlapping the slices. Season with salt and black pepper.

• Sprinkle a portion of the grated Gruyère and Parmesan cheese over the potatoes.

• Repeat the layers until all the potatoes are used, ending with a layer of cheese on top.

 

5. Pour the Cream:

• In a saucepan, heat the heavy cream until hot but not boiling. Add minced garlic and stir. Pour the hot cream evenly over the layered potatoes and cheese in the skillet.

 

6. Bake to Perfection:

• Cover the skillet with foil and bake in the preheated oven for 45 minutes. Remove the foil and bake for an additional 15-20 minutes or until the potatoes are tender and the top is golden and bubbling.

 

7. Garnish and Serve:

• Remove the potato gratin from the oven. Let it cool for a few minutes.

• Garnish with fresh thyme leaves for a burst of flavor and aroma.

 

8. Serve and Enjoy:

• Slice the potato gratin directly in the skillet and serve hot as a rich and creamy French-style side dish. Enjoy the layers of cheesy goodness and tender potatoes!

 

Note: You can customize the recipe by adding sliced onions, a pinch of nutmeg, or even a layer of crispy bacon for extra indulgence.