Drain the cherries and collect the juice. Mix the starch with 3-4 tablespoons of water until smooth. Bring cherry juice and 2 tablespoons of sugar to the boil. Bind with mixed starch. Add cherries and season with cinnamon.
Set the pot aside.
Separate eggs. Mix quark with 50 g sugar, egg yolk, sauce powder and semolina. Beat the egg whites and 1 pinch of salt with the whisks of the hand mixer until stiff and fold loosely into the quark.
Pour the stewed cherries into a greased, ovenproof dish sprinkled with semolina and spread the curd mixture evenly on top. Sprinkle with flaked almonds. Bake the casserole in a preheated oven (electric oven: 175 °C/circulating air: 150 °C/gas: level 2) for 50-60 minutes.
Dust the casserole with icing sugar and decorate with mint. Tastes hot and cold.