Pirozhki with Apples

 Pastries or pirozhky are  the pastries with apple or cabbage and they are most popular in Russia.
 
 You will need:

2 1/2 cup unbleached All-Purpose Flour ,
1/4 lb Butter, 1 stick,
 1/2 c Sour cream ,
3  Egg yolks ,
 1/2 ts Salt,
 1  Egg white, beaten with a little water for glazing.
  Filling:
3 medium apples,
1Tb butter
2 Tb sugar

   Preparation:

 Combine the flour and cold butter. Add the egg yolks, salt, sour cream and 
process or knead lightly until the dough forms a ball.
 Cut in half, wrapping each  in plastic wrap, refigerate for at least 2 hours or 
overnight.

   Roll out half the dough on a lightly floured work surface, to 
about 1/4-inch thickness. Cut into rounds with a 3-inch cutter or 
glass.

  Prepare the filling: peel and cut apples in a small pieces. Mix them with butter, sugar
and stew for 5 min. on a medium heat.

   Place a spoonful of the filling on one side of each round, fold 
the top over, brush with a little of the egg glaze and seal with a fork or 
pastry cutter for a fancy edge.

  Place each Pirozhki with apples on a lightly greased 
or non-stick baking sheet and brush with the glaze.
Bake in a preheated 375 F for about 20 minutes.
 

Cool Pirozhki with apples on wire racks.