Stir the butter until fluffy, finely chop the parsley.
Soak the rolls in water and squeeze well.
Mix butter 1 egg, finely chopped parsley and softened in water, squeezed rolls.
Then add bread crumbs and salt.
Work everything well into a smooth dough.
Form small dumplings and put them into the boiling beef soup or diced soup. Leave to stand for a few minutes.