Rocket crumple is what we kids called this - only for the healthiest eaters!
The day before, boil potatoes and hard-boil eggs so they're completely cold.
The day of, slice potatoes, eggs, and some good Hungarian kolbasz/spicy sausage; set aside some of the large, whole potato slices.
Butter a deep baking dish generously
Put a layer of sliced potatoes, one of sliced eggs, one of sliced sausage, and put a *lot* of sour cream and more butter on, then another layer of sliced potatoes. Then, lean on the potato layer with splayed hands to press it down everywhere, then repeat till the dish is full, leaning on each potato layer. Use the reserved pretty tater slices for the top, press down, top with more butter, bake at 350 for 45 mn or so, till the top taters are deep brown and crisp and chewy and to be fought over. The whole thing simmers in the buttery sour cream sausage juice and permeates the eggs and potatoes, it is one of the best foods in the universe. Again, be healthy so it doesn't kill you.