Drain the cherries. Separate eggs. Whisk the egg yolks, vanillin sugar and sugar with a whisk until white and creamy. Add pudding powder and quark and mix.
Beat the egg white until stiff and fold in. Grease four ovenproof porcelain moulds (each containing 300 millilitres). Spread the curd mixture into the moulds, leaving about one centimetre of space around the rim.
Spread cherries on top. Bake in the preheated oven (electric range: 175 °C/ convection oven: 150 °C/ gas: level 2) for about 45 minutes until golden brown. Remove and let cool down briefly. Delicious with vanilla sauce.