Grease a fat pan (approx. 32 x 39 cm; at least 3.5 cm deep) and dust with flour. Mix the pudding powder, 2 tbsp. sugar and 6 tbsp. milk. Boil up the rest of the milk. Stir in pudding powder, bring to the boil again and simmer for about 1 minute while stirring.
Let it cool down and stir more often.
Peel, quarter and core the apples and cut the round side deep several times, but do not cut through. Sprinkle with lemon juice.
Cream 250 g butter, 250 g sugar, vanilla sugar, orange bake and 1 pinch of salt. Stir in the eggs one by one. Mix flour and baking powder and stir in portions briefly. Spread the dough on the fat pan.
Stir the crème fraîche into the pudding. Spill on the dough and spread thinly. Spread the apple quarters with the round side up. Bake in the preheated oven (electric cooker: 175 °C/circulating air: 150 °C/gas: level 2) for about 30 minutes.
Mix 100 g butter and brown sugar.
Take the cake out of the oven. Spread the butter-sugar-mixture evenly in flakes and bake at the same temperature for about 30 minutes. Let it cool down.