Peel the raw potatoes and cut into fine slices with a slicer
Peel the onions and cut into cubes, dust them lightly with flour. Toast in a little oil or butter in a large saucepan. Pour in milk and cream. Add the potato slices, season with salt and pepper. Simmer in a closed saucepan over low heat for about 15-20 minutes. If you like it, you can add chopped dill at the end. In the meantime, preheat the oven to 180 ° C fan oven.
Put about half of the cream potatoes in a baking dish, spread the smoked salmon on top, pour the rest of the cream potatoes on top. Sprinkle with the cheese and put in the oven. When the cheese is nice and golden brown - bon appetit!