Potato, Bacon and Cheese Casserole

Method

1. In a pan, heat a drizzle of oil and fry the pancetta strips until crispy.
2. Add the sliced onion and cook over low heat for 15-20 minutes.
3. Meanwhile, peel the potatoes and slice them thinly using a mandoline.
4. Season the potato slices with salt, pepper, and thyme.
5. Assemble the casserole: spread a thin layer of béchamel on the bottom of a baking dish, then add a layer of potatoes, then a layer of the pancetta and onion mixture, then a layer of cheese slices. Repeat the layers.
6. Press down gently between layers to compact.
7. Finish with a final layer of béchamel and a few thyme leaves.
8. Bake at 180°C (350°F) for about 45 minutes.
9. Let it rest, then unmold and serve.