Tartiflette is a classic French Alpine casserole combining thinly sliced potatoes, crispy lardons, sautéed onions, and melted Reblochon cheese into a rich, creamy gratin. Its defining characteristic is the tangy, semi-soft Reblochon that creates a luxurious, melted top layer.
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Thinly slice the potatoes, and finely chop the onion and garlic.
In a large pan over high heat, cook the lardons until crisp. Remove from the pan and set aside.
In the same pan, melt the butter and add the chopped onion and garlic. Sauté until softened.
Pour in the white wine to deglaze the pan. Season with black pepper, a pinch of salt, and mixed herbs.
Return the crispy lardons to the pan and stir everything together.
In a baking dish, begin layering the ingredients. Start with a layer of sliced potatoes, followed by a layer of the onion and lardon mixture.
Continue layering potatoes and the mixture until you reach the top of the dish, finishing with a layer of potatoes.
Pour the double cream evenly over the top layer.
Cut the Reblochon cheese into thick slices and arrange them over the potatoes.
Sprinkle with a few more mixed herbs for garnish.
Bake in a preheated oven for about 1 hour, until the potatoes are tender and the cheese is golden and bubbly.
Remove from the oven, let it rest for a few minutes, and serve hot.
Store covered in the refrigerator for up to 3 days. Reheat covered at 350°F until warmed through, 15–20 minutes.
shallow gratin dish or 9×13-inch baking dish · mandoline or sharp knife for thin, even potato slices
Reblochon is traditional and irreplaceable for authentic tartiflette, but you can substitute with Raclette or Taleggio cheese if unavailable. The texture and flavor will differ.
Bake until the cheese is golden and bubbling at the edges and the potatoes are fork-tender underneath, typically 30–40 minutes at 400°F.
Yes, assemble it completely, cover, and refrigerate up to 24 hours. Add 10–15 minutes to baking time if baking from cold.
Pancetta, thick-cut bacon, or smoked ham work well. Cook until crispy, then chop before layering.
Yes, if made with the standard ingredients listed (potatoes, cheese, cream, bacon, onions, herbs). Verify all components are certified gluten-free.
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