Sauerkraut filled potato pie

Peel the potatoes, wash, cook until ready and make mashed potatoes. Drive the eggs into the mash (you can leave the egg to lubricate the pie) and mix well. Lightly squeeze the sauerkraut, place in a frying pan and simmer under a lid over a low heat until tender. Cut the lard into small cubes, cut the onions into half rings. Fry everything and mix with cabbage. Grease the baking sheet with oil, sprinkle with crumbs, put half of the mashed potatoes on it and put the filling in an even layer. Place the remaining potatoes on top, level and join the edges. Grease the top with egg or sour cream and bake in the oven at 180-200 degrees.