1. Cut your butternut squash into cubes and place them on a baking sheet with whole garlic cloves.
2. Drizzle generously with olive oil, lightly season with salt, and bake for 30 minutes at 180°C until the flesh is soft and slightly golden.
3. In a hot pan, sauté the thinly sliced shallots with the bacon lardons.
4. Let them brown for a few minutes, then deglaze with a splash of white wine.
5. Let it reduce until the liquid is almost completely evaporated.
6. Prepare your béchamel sauce (butter, flour, milk, salt, pepper, nutmeg) then add the cubes of reblochon cheese to melt in the sauce.
7. Place a little béchamel in the bottom of the dish, a layer of pasta, a little butter, the bacon, then pasta, béchamel, and so on. Finish with a layer of béchamel and a sprinkle of grated cheese on top.
8. Bake for 20 to 25 minutes at 190°C, until the top is nicely browned.
9. Tip: lightly pre-cook your lasagna noodles if you want an extra creamy result.