First thing, wash and small cut shampinonchiki. Now fry them in half butter. Boil eggs.

Preheat the oven to 200 degrees. In a saucepan melt butter, saute onions, garlic and chopped parsley over low heat. Salt, pepper. Now mix with the stuffing.

Here, in a bowl, add the mushrooms.

Add the mustard and most of the beaten eggs, leaving a little for brushing over the dough. Mix.

Roll out the dough into a rectangle the size 23х30 see In the middle of the rectangle, put half of the filling, and top with half of the eggs. Then, spread on top the remaining meat.

On the long sides of the rectangle do through 2 cm oblique incisions. Wrap the top and bottom edges of the dough on the stuffing, squeezing lightly. Raised strips and connecting the ends of the cross-the cross is pressed against the filling. Reduce heat in oven to 160-170 degrees. Grease the dough with the remaining beaten egg. Bake for 30-40 minutes until Golden brown.

You can serve it both hot and cold. Bon Appetit!!!