Onion pie with onions, cheese, egg

A delicious pie with onion filling perfectly complements main dishes. An unusually simple culinary recipe for a savory pie, which can be an excellent addition to the main dish. It makes any food taste better: soups, borscht, even main courses. Tea drinking with this cake is also very tasty. In a word, this is a dish of French cuisine that can be used in different ways: both as the main and as a secondary dish. Also note that the dough for this pie consists of only three components, which does not prevent it from being tender.