My German nana taught me this and it’s stayed with us since!

Bring a pot of salted water to a gentle boil. Drop small portions of dumpling batter into boiling water using two spoons. Cook until dumplings rise to the surface and are cooked through, about 3-5 minutes. Remove with a slotted spoon and set aside.

Fold cooked dumplings into tender cabbage.
Garnish with chopped parsley if desired. Serve warm.