In bowl, stir grated cheese and Parmesan cheese, onion cut into small pieces and added to them. Each triangle processed cheese is divided into three equal parts. The dough is divided into 9 balls, each ball is stretched hands in a circle with a thickness of about 2 cm. The buns are arranged in a tray of oven which has previously oiled each pita sprinkled with plenty of cheese, Parmesan cheese and onion, and in the middle is placed a piece of processed cheese. The buns are baked in a preheated to 180C degrees oven until golden tan in the lower part of the oven.