Pre-fried potatoes, which can be lightly fried and crunchy, it is of your choice. Ready potatoes are seasoned with spices. Minced meat is engaging with one egg, onion, spices and breadcrumbs and fry until ready. Maybe mushrooms braised with minced meat or separately, depending on how you prefer - I zaparzhih mushrooms separately from minced meat. In a suitable pan (or shape of your choice) put half of fried potatoes, distributed top minced meat and mushrooms, then piecing another row with fried potatoes. Since potatoes and minced meat ready to make topping of yogurt, one egg and mayonnaise and pour on top, sprinkle with dill and bake in a moderate oven until ready itself topping - for about 10-15 minutes. Then removed and grated cheese on top and return to oven to melt slightly or to seal a nice crust.