
Ingredients:
- 25 grams (1oz) butter, melted
- 1 sprig fresh thyme
- 1 1/2 cups heavy cream
- 1/2 cup grated Parmesan, plus more for broiling
- 2 pounds russet potatoes, peeled and cut into 1/8-inch thick slices
- Salt and freshly ground black pepper
- 2 1/2 cups Gruyere or Swiss cheese, grated
Instructions:
- Preheat oven to 375 degrees F.
- In a saucepan, heat up the cream with a sprig of thyme.
- While cream is heating up, butter a casserole dish. Place a layer of potato in an overlapping pattern and season with salt and pepper. Remove cream from heat, then pour a little over the potatoes. Top with some grated Parmesan and Gruyere. Make 2 more layers ending with a last layer of cheese. Bake, uncovered, for 45 minutes. Sprinkle some more Parmesan and Gruyere and broil until cheese browns, about 5 minutes.
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