For the base, put 250 g flour, 125 g butter in flakes, 50 g sugar, 3 tablespoons water and 1 egg in a bowl. Knead first with the dough hooks of the hand mixer, then with your hands to a smooth dough. Roll out to a circle (approx. 35 cm Ø) on a floured work surface. Pour into a greased tart mould (29 cm Ø, with lift-off base) sprinkled with flour and press the rim down. Prick several times with a fork and chill for about 30 minutes
Drain the cherries in a sieve. Finely chop the nuts. Mix 150 g flour, 75 g sugar, 1 pinch of salt and nuts. Separate 1 egg. Add the egg yolks and 120 g butter. First with the dough hooks
Mix quark, 2 eggs, egg white, 100 g sugar and sauce powder with the whisk of the hand mixer. Cut the baking paper into a circle (approx. 30 cm Ø) and lay it on the cake base. Spread dried fruit on top
Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: see manufacturer) on the lower rack for 10-15 minutes in a blind oven. Remove, carefully lift the baking paper with dried peas out of the tin. Bake for another 5 minutes on the lower rack at the same temperature
Remove the base, add the curd mixture and cover with cherries. Spread crumbles on top. Bake the cake at the same temperature for 10-15 minutes. Reduce the oven temperature (electric oven: 175 °C/ convection oven: 150 °C/ gas: see manufacturer) and bake the cake in 15-20 minutes