For 4 people
Start by preheating the oven to 200°C.
Place the potato slices in a bowl with the melted butter. Coat them well with the butter.
Season them with pepper and mix.
In a dish, spread the potatoes, about 3 layers, and add one of cheese cut into slices.
Sprinkle with thyme and pepper and repeat these steps.
Bake for 30 minutes and sprinkle with thyme before serving.