Take out the ham cutlets and put them between some baking paper or plastic foil, and hammer/pound them with a meat hammer or the backside of a casserole, so the meat become thin and tender.
Break the egg in a deep plate, and add the salt and the pepper and stir it together with a fork.
Pour the flour and the bread crumbles in 2 different deep plates.
Dip the meat first in the flour, flip it over on both sides, make sure it is covered totally with flour. Then dip the meat it in the egg with the same procedure as in the flour. Finally dip the meat it in the bread crumbles. To the same with all the schnitzels.
Put the schnitzels on a plate, and then put them in the fridge for 30 minutes.
Take the schnitzels out from the fridge and heat up a frying pan. Add some of the butter in the pan, and fry the schnitzels approx 4 minutes on each side, and make sure you get a nice golden yellow and crispy surface. Do not have to high temperature when frying the meat.
Serve together with French fries, potatoes, or spätzele. squeeze juice from half a citron on the schnitzel.