Yes, there is a Bavarian variation where they add 2-3 bread croutons as a filling. It adds a crunch to the dumpling center. Flatten a dumpling ball in your hand into a circle and place 2-3 croutons into the center. Wrap the potato dough around the croutons to close the dumplings and boil as directed in the recipe. You can also fill your potato dumplings with chopped bacon or ground beef (or corned beef) or chopped sautéd mushrooms.