Peel the two apples, remove the core, and cut into pieces
Boil the apples at medium heat in a saucepan with water, sugar, and vanilla till they are tender (20 min)
Blend the apples
Mix the dry ingredients: Flour and baking powder
Cut the butter into pieces
Mix all the ingredients and stir till there are no more lumps of butter
Distribute the dough evenly in the springform pan. Make sure that the edge of dough is at least 2-3 cm high
Bake the bottom layer in the oven at 190°C at the lowest shelf for 15 min