For the apple and sour cream tart, first prepare the dough.
Knead a shortcrust pastry from butter, sugar, flour, baking powder and egg. Pour into a springform pan and raise the edge. Peel and dice or grate apples, boil with apple juice and lemon juice and sugar. Stir in coldly stirred pudding powder, bring to the boil again and pour onto the short pastry.
Bake at 180 degrees for about 60 minutes. Allow to cool. Whip the cream until stiff, mix with sour cream or fresh cream, spread on the cooled cake.
Mix sugar with a little cinnamon and sprinkle over the apple and sour cream cake.