"OTSNEBA" CAKE WITH APPLE AND WALNUTS

2 apples
300 sour cream
250 gr.butter or margarine
4 eggs
2 cups of sugar
1 cup sliced walnuts
1 tea spoon soda
1 table spoon vinegar
3 cups flour
vanilla
Whip yolk of the eggs with 1 cup of sugar well and add butter, sour cream, soda, vinegar. We must whip all these components very well. Add flour, vanilla. Put the dough on the baking sheet and flatten it. Then take off the rind from apples, cut them in thin pieces and put on the dough. Now we can bake it. When the dough will swelling, take the egg whites and whip with a cup of sugar (or less). Pour on the dough and bake it. Powdere the cake with 1 cup of sliced walnuts.