A relatively simple one since the kitchen of the vacation house was rustic.
Thickly slice some potatoes then boil them until almost done. Add a couple cloves, some black pepper, and a crushed garlic clove to some milk and bring to just under the boil. Let steep and then strain. Layer the potatoes with thinly sliced onion and smoked ham (used speck from Sudtirol), pour over the sauce, top with cheese, and bake until it's ready to go.