How to make
Boil the potatoes in salted water until they're cooked. Mash them.
Add butter, eggs, salt and parsley to them. Spread out the finished puree in greased baking pans and bake them for ten minutes.
Then spread the mashed potatoes with the tomato puree, sprinkle them with spices of your choice and arrange the following in a sequence - mortadella, corn and stewed vegetables.
Sprinkle the pizza with the grated cheese. Bake in a preheated 390°F (200 degree) oven for 15 minutes.