Classic French Tartiflette

Instructions

1. Get your oven going at 375°F and generously butter a 9x13 inch baking dish. The butter prevents sticking and adds another layer of richness to this already indulgent dish.
2. Drop the sliced potatoes into a large pot of well-salted boiling water and cook until they're just tender when pierced with a fork — about 12 minutes. You want them cooked through but still holding their shape since they'll finish cooking in the oven.

   ⏱ 12 min
3. Drain the potatoes thoroughly and spread them on a clean kitchen towel to cool slightly. Getting excess moisture off now prevents a watery finished dish.
4. Cook the diced bacon in a large skillet over medium heat, stirring occasionally, until it's crispy and has rendered plenty of fat — about 8 minutes. Listen for that satisfying sizzle that tells you it's working.

   ⏱ 8 min
5. Use a slotted spoon to transfer the crispy bacon to a paper towel-lined plate, but leave all that rendered fat in the pan. That's liquid gold for cooking the onions.
6. Add the sliced onions to the bacon fat and cook over medium heat, stirring occasionally, until they're golden brown and sweet — about 10 minutes. The bacon fat gives them incredible flavor, so don't rush this step.

   ⏱ 10 min
7. Stir in the minced garlic and cook just until fragrant — about 1 minute. Garlic can turn bitter if it browns, so keep it moving in the pan.

   ⏱ 1 min
8. Pour in the white wine and let it simmer until it reduces by half — about 3 minutes. The alcohol will cook off, leaving behind concentrated flavor that brightens the whole dish.

   ⏱ 3 min
9. Stir in the heavy cream and season generously with salt and pepper. Taste and adjust — this creamy mixture should be well-seasoned since it's coating all those potatoes.
10. Arrange half the potatoes in your prepared baking dish, overlapping them slightly. Top with half the creamy onion mixture and half the crispy bacon, distributing everything evenly.
11. Repeat the layers with the remaining potatoes, onion mixture, and bacon. Press down gently to compact the layers — this helps everything meld together as it bakes.
12. Arrange the reblochon slices over the top, covering as much surface as possible. Sprinkle with fresh thyme if you're using it — the herbal note cuts through all that richness beautifully.
13. Slide into the oven and bake until the top is golden brown and the edges are bubbling enthusiastically — about 25 minutes. The cheese should be melted and starting to caramelize in spots.

    ⏱ 25 min
14. Let the tartiflette rest for 5 minutes before serving. This brief pause allows the layers to set up slightly, making it easier to serve and preventing molten cheese burns.

    ⏱ 5 min