Melt butter in a saucepan and let cool down a little. Whisk eggs and stir in butter. Add salt and pepper. Thicken with the breadcrumbs until it is a little firmer.
Form small dumplings out of it. Let simmer in the no longer boiling soup for about 10 minutes.
The amount makes approx. 24 dumplings that can be frozen without pre-cooking, then they can be portioned as required.