Margarine rubbed on a coarse grater. Add sour cream, salt, quenching soda, flour.

   Knead dough (it sticks to the hands, that's okay), put in the refrigerator overnight, wrapped in plastic wrap (or package).

   I usually do a test on the eve of the holiday, and bake the next day. If there is no minimum time - in refrigerator should stay in bed for 2 hours.

   Prepare the filling: cut the onion (medium dice), fry until golden brown in a pan (tire a little), fried onions to cool, separated from the oil.

   Processed cheese Grate, connect with fried onions, add eggs (one protein to leave the top of the cake). 
Divide dough into two parts (nearly equal, large - for the basics, less - to cover).

   To use this test to moisten hands with water, then it is easy lepitsya. Most of the dough to roll out his hands in the form, make the edge. Pour the filling.

   Make a big cake with the second part of the test, cover the pie, make it to the brim and zaschepit. Whip the egg white, rub the top of the cake. If you wish, sprinkle sesame seeds.