Cut the quince into wedges, remove the core. If you really want to, you can peel it, but you don`t have to.
Put the quince with 50 g sugar and the cinnamon stick in a saucepan and just cover with water. Cook for about 15 minutes. Pour quince into a colander. Pick up the brew.
Knead the flour, almonds, butter and 90 g sugar to make crumble. Line the springform pan with 2/3 of it and form an approx. 3 cm high rim.
Mix quark, egg, pudding powder, 50 g sugar (if you like it very sweet, you can take a little more) with approx. 400 ml quince stock and spread on the floor. Place the quince slices on the quark mixture and spread the remaining dough on top as a crumble.