For 2-3 people
100 grams of ham (Try not to get the water addicted one)
Grated parmesan (5 table spoons, around 50 grams)
One table spoon of grated breadcrumbs (This is not strictly necessary, it depends on the pan you are using, if you don’t have them, slightly grease the bottom of the pan with one table spoon of olive oil, it will help so the potatoes won’t stick to the pan)
A small glass of milk
Salt and pepper
Pre-heat the oven at 200 degrees
Peel the potatoes and slice them as thin as possible
Alternate one level of potatoes (slightly overlapped) with mozzarella, ham, 2 tablespoons of parmesan, salt and pepper. Terminate with the potatoes and sprinkle over the parmesan.
Pour the milk from one side (it will help keeping the potatoes moist)
Put in the oven (middle trail) for 40-45 minutes, but check them after 40 minutes with a fork, they should be tender. If not keep them for more minutes and until the top is golden (if you are afraid of burning them, put them in the lower part of the oven)
You can also make this the night before and warm it the day after for lunch!