Eggs mix to successively add the sugar and the butter - until a homogeneous mixture. Baking powder and vanilla are added to the flour and sifted through a sieve. So sifted flour is added to the egg mixture. 2/3 of the resulting egg mixture is poured into an oiled tray and put cement in the preheated oven for 20 minutes at 150 C. The apples are peeled and grated. Sequentially them add sugar and cinnamon. The resulting mixture is spread on the already-baked base. On apples grated rest of the egg mixture to which is added to flour to produce a medium soft dough. Cake bake again to pink at 150 C, only upper oven. Cake is cut after full cooling. Before served cake sprinkled with powdered sugar.