Boil the potatoes in lightly salted water.
Mash the potatoes until they are mashed, without lumps, do not leave much water in the potatoes so that the base of the cutlets does not spread. Add butter and eggs to the potatoes.
Add flour, salt, pepper to the potato dough and mix thoroughly until smooth.
Form medium-sized cutlets from the resulting dough. Place the cutlets in a preheated frying pan with vegetable oil and fry on each side until golden brown.
Place the finished cutlets, without excess oil, on serving plates.