For the curd dumplings, cream butter, sugar, egg and yolk until fluffy. Stir in curd cheese and lemon zest. Fold in sliced white bread, bread crumbs and salt.
Let the dough rest for about 90 minutes (cool). Mix poppy seeds with Powidl. Brown the breadcrumbs in butter and add the poppy seeds. Form the dough into a roll, cut off slices and wrap the filling with them.
Cook in salted water for approx. 8 minutes and then roll in butter-poppy seed crumbs.