Peel and boil the onion in pre-salted water for 10 minutes (to be released already boiled water). Cut into 2 halves poizdalbavame, arrange in a baking dish with a little sunflower oil and water, and filled with a mixture of egg, cheese and pepper. If you get a hole in the sinking, just plug with a piece of onion. Hollowed part of the onion also put in the tray part of which cut into crescents and put on the onions. Bake in the oven at 180C degrees for about 15 minutes until browned.