Tartiflette

Step 1 -Adjust an oven rack to the middle position and preheat the oven to 375 degrees F.

Step 2 -Lightly grease a 9x13-inch baking dish.

Step 3 -In a large pot of water, add 1 tablespoon of the kosher salt and the potato slices and bring to a boil.

Step 4 -Reduce the heat to medium and simmer the potatoes until they are barely tender, about 4-5 minutes. Be careful not to overcook as they will continue to cook in the oven.

Step 5 -Drain the water and pour the potatoes into a large bowl to cool. Dry the large pot.

Step 6 -In the dried pot over medium heat, add the bacon pieces and cook, stirring occasionally, until they are browned and crisp, about 10-15 minutes.

Step 7 -Use a slotted spoon to transfer the cooked bacon pieces to a paper-towel-lined plate to drain.

Step 8 -Reserve about 2 tablespoons of the bacon drippings in the pot and discard the rest.

Step 9 -In the same pot over medium heat, add the garlic and the onions to the bacon drippings and cook, stirring frequently, until they are soft and very fragrant, about 3-5 minutes.

Step 10 -Add the thyme, the remaining kosher salt, and the black pepper to the onion-garlic mixture and cook, stirring frequently, until the thyme is fragrant, about 2-3 minutes.

Step 11 -Add the wine to the onion mixture and use a wooden spoon to scrape up any of the browned bits from the bottom of the pot.

Step 12 -Bring the onion mixture to a simmer and cook, stirring frequently, until it has reduced by half, about 2-4 minutes.

Step 13 -Add the heavy cream to the onion mixture and bring to a simmer. Cook, stirring frequently, about 2 minutes.

Step 14 -Transfer the pot to a wire rack.

Step 15 -Arrange 1/2 of the potato slices in a single layer into the bottom of the prepared baking dish and sprinkle with 1/2 of the bacon pieces.

Step 16 -Evenly add 1/2 of the onion mixture over the bacon layer.

Step 17 -Top the onion mixture layer with the remaining potato slices and then evenly cover the potato layer with the remaining onion mixture.

Step 18 -Sprinkle the Gruyère cheese over the onion mixture layer and top with the semi-soft cheese wedges.

Step 19 -Sprinkle the cheese layer with the remaining bacon pieces.

Step 20 -Bake the potato mixture until the cheese has browned and the filling is bubbling, about 30-35 minutes.

Step 21 -Transfer the baking dish to a wire rack and let the potato mixture cool, about 10 minutes.

Step 22 -Serve.