Boil the potatoes. Cool down. Make a puree by adding an egg and ....
Fry mushrooms with onions.
Divide the potatoes into 2 parts and put mushrooms in each in the middle and close the edges. Form zrazy and bread them in bread crumbs.
Bake in the oven at 200C until a crust forms. Sprinkle with finely chopped dill before serving.