Mix the sugar, vanilla sugar, eggs, flour and baking powder together well. Peel the apples and, after removing the core, cut into small pieces and stir into the batter (about 2-3 large apples, if they are very juicy, 400 g is sufficient). Then bake in a well-greased small loaf pan (or any other form) for 40-45 minutes at 160 ° C (hot air).
After cooling, serve sliced (as a cake) or coated with butter or margarine (as bread).