Butter the springform pan and preheat the oven to 180°C. Stone cherries. Mix margarine with sugar, vanilla sugar and salt to get a homogeneous mixture. Stir in each egg for at least half a minute. Add flour and baking powder with the milk.
Fill the dough into the springform pan and cover with cherries. Bake in the oven at 180°C for app. 50 minutes.