Make a firm batter from 200 g butter, 200 g sugar, eggs, vanilla sugar, 400 g flour and baking powder and place on a greased baking sheet sprinkled with breadcrumbs. Peel and roughly grate the apples, spread on the dough. Make the crumble from the remaining ingredients and crumble over the apples. Bake at 175 ° C for 30-40 minutes.