Place the quark, flour, egg, egg yolk, 75 g butter, salt, 75 g breadcrumbs and 1 packet of vanillin sugar in a mixing bowl and mix with the whisks of the hand mixer. Cover and chill for approx. 40 minutes
Wash the mirabelles and drain well. For the dumplings, cut open 12 mirabelles, remove the stone and add one sugar cube each, put aside. Stir the sauce powder, 1 packet of vanillin sugar and 3-4 tbsp. water until smooth. Place lemon juice, 50 g sugar, 200 ml water and grape juice in a saucepan, bring to the boil and stir in the sauce powder. Bring to the boil while stirring. Add the mirabelles and simmer on low heat for 5-6 minutes. Pour into a bowl and let cool
Form 12 dumplings from the curd mixture with floured hands, press 1 mirabelle with sugar cubes into the middle of each dumpling and close them again. Put the dumplings into a large, wide pot of boiling salted water, bring to the boil briefly and let them simmer at low heat for 15-20 minutes
Melt 50 g butter in a small pan, add 50 g breadcrumbs, froth up briefly while stirring. Lift the dumplings out of the water with a ladle, drain and arrange 2 pieces on plates. Add some compote. Sprinkle dumplings with breadcrumbs butter and 1-2 tbsp. sugar, decorate compote with mint leaves. Add the rest of the compote and dumplings
Waiting time approx. 20 minutes