Grease a springform pan (26 cm Ø; approx. 7.5 cm high). Knead 250 g flour, icing sugar, 1 pinch of salt, 1 egg, 125 g butter in pieces and possibly 1 tbsp. water first with a hand mixer, then briefly with your hands until smooth.
Chill for about 30 minutes.
Drain the cherries. Mix quark, cream cheese, 5 eggs, 150 g sugar and pudding powder.
Roll out the short pastry on a little flour to a circle (approx. 32 cm Ø). Line a springform pan with the pastry, pressing down the edges. Prick the pastry base several times with a fork. Sprinkle half almonds on top. Spread cherries on top.
Spread the quark mixture on it. Pre-bake in the preheated oven (electric oven: 175 °C/circulating air: 150 °C/gas: level 2) for 25-30 minutes.
Coarsely crumble Amarettini. Knead 100 g flour, the rest almonds, 50 g sugar, 75 g butter and 1 egg yolk first with a hand mixer and then briefly with your hands to form crumbles. Mix in Amarettini.
Spread it on the cake and grate it between your fingers. Continue baking for about 40 minutes. Cool down in the mould . Sprinkle with sugar crystals.