Dumplings: Stir well expressed curd with vanillin, salt, sugar, yolks, sour cream, egg and semolina. Cover with cling film and rest in the refrigerator for 1 hour. Grate apple, squeeze lightly and stir in. Boil lightly salted water and add cinnamon bark. Use a tablespoon to make dumplings from the curd mixture and place them in the boiling water. Reduce the temperature and cook the dumplings below boiling point for 10-12 minutes. Lift out, drain well and turn in the butter crumbs on the other side. Sprinkle with powdered sugar and serve with baked apple sauce.
Crumbs: Heat butter. Add crumbs, powdered sugar and vanillin and toast until golden brown, stirring throughout.
Baked apple sauce: remove core of apples. Place apples in buttered pan, brush with melted butter and sprinkle with a little sugar. Bake in heated oven at 200 °C on middle shelf for 45 minutes. Cut apples into pieces and grind finely. Stir the puree with water and wine. Refine with apple brandy and cinnamon. Garnish with mint leaves and roasted apple slices as desired.