Before you begin, preheat your oven to 375°F (190°C) to ensure that it’s ready when your Potato Galette is prepared for baking.
Step 2: Slice The Potatoes
Start by thinly slicing the peeled Russet potatoes. You can use a mandoline slicer to achieve uniform thickness.
Step 3: Sauté The Garlic And Thyme
In a large skillet, heat the clarified butter over medium heat. Add the minced garlic and fresh thyme leaves, sautéing them until fragrant. This step infuses the butter with delightful flavors.
Step 4: Layer The Potatoes
Take a round baking dish and brush it generously with the garlic-infused butter. Now, create layers of potato slices, slightly overlapping them as you go. Season each layer with a pinch of salt and pepper.
Step 5: Repeat The Layers
Continue layering potatoes and seasoning until you’ve used all the slices. Drizzle any remaining garlic butter over the top.
Step 6: Bake To Perfection
Cover the baking dish with aluminum foil and bake in the preheated oven for 45 minutes. This allows the potatoes to become tender.
Step 7: Add The Cheesy Topping
After 45 minutes, remove the foil and sprinkle the shredded Gruyere and grated Parmesan cheese evenly over the Galette. Return it to the oven, uncovered, and bake for an additional 15-20 minutes until the top is golden brown and bubbling with cheese.