Pierogi with Sweet Quark Filling

55 % dough [30 % wheat flour, water, iodized salt (salt, potassium iodate)], 45 % filling [18% quark (skimmed _milk_, cream (_milk_), lactic acid bacteria, microbial rennet), cream cheese (skimmed _milk_, cream (_milk_), cheese starter cultures, microbial rennet, salt), sugar, soft _wheat_ semolina, sunflower oil, iodized salt (salt, potassium iodate), lemon juice from concentrate, vanilla sugar (sugar, vanilla)].