Apple fladen (Hungarian recipe)

Rub together on a pastry-board one-half pound of sweet butter with one pound (four cups sifted) of flour, add four tablespoons of powdered sugar, a little salt, four egg yolks and moisten with one-half cup of sour cream; cover and set aside in the ice-box for one-half hour. Take two pounds of sour apples, peel, cut fine, mix with one-half cup of
light-colored raisins, sugar and cinnamon to taste. Cut the dough in two pieces, roll out one piece and place on greased baking-pan, spread over this four tablespoons of bread crumbs and the chopped sugared apples, roll out the other half of dough, place on top and spread with white of one egg, sprinkle with two tablespoons of powdered almonds. Bake in hot oven.