Stir butter with egg, add water, salt, flour, knead a smooth dough, wrap in plastic wrap and put in refrigerator for 30 minutes.
Boil the breast until tender, grind, fry mushrooms with onions until tender, add salt, pepper and nutmeg, there also add chopped chicken and fry a little together.
Warm it up the oven to 180 degrees. Split form (23 cm), brush with butter, roll the dough, put in shape, form a skirting, put the filling on the dough, rethrownew.
Vzbey eggs lightly with a fork, add cream and cheese, mix well, pour the mixture evenly stuffing.
Bake pie 35-40 minutes. Then take off the knob, place the cake on the grill, cool.