Dice the smoked pork.
Peel and finely chop the onion . Peel the apple, remove the core and cut into cubes.
Drain the sauerkraut in a fine sieve.
Heat the butter in a non-stick pan and fry the onion until translucent. Add the potato dumplings and fry over a high heat until golden brown, stirring occasionally.
Meanwhile, heat the rapeseed oil in a large pan and fry the ham cubes.
Add the sauerkraut and apples to the pan. Cook for 5 minutes, stirring occasionally.
Add the browned potato dumplings and onions to the sauerkraut; season with salt and pepper. Arrange in a bowl and sprinkle with chopped parsley.