Pies became favorites on our tables long ago. It takes a little time to prepare them, and the necessary products are always at hand. Today I offer you a very tasty pie with mushrooms on kefir. To prepare it, you only need to mix all the ingredients for dough and fry champignons with onions for filling. Baking rises well in the oven and is soft and fluffy. Except champignons, oyster or forest mushrooms can be used to prepare the filling.