We peel the potatoes, wash them and boil them in salted water,
When they are boiled, we drain them from the water, we stop 4-5 potatoes and we grind the rest as for puree, we let them cool,
Boil 3 eggs in salted water.
In a bowl beat 3 eggs with salt, add grated cheese, chopped onion and mashed potatoes (I grated)
In a pan greased with butter add the potato slices (of those I stopped) add 1/2 of the composition of the mixture of egg and potatoes, add the 3 eggs (peeled) cut into 2, above the remaining mixture.
I beat the egg with a fork, add the grated cheese and mix
Pour the mixture on top of the puree and put it in the preheated oven until it browns nicely.