Peel and wash the potatoes and cut them into thick slices. Cut cabanossi into slices. Heat the oil in a large, deep frying pan and fry the potatoes for about 8 minutes while turning.
Add Cabanossi and fry for about 2 minutes. Season potatoes with pepper and marjoram and add 800 ml water. Bring to the boil and stir in the onion soup. Add frozen beans, bring to the boil again and simmer covered for about 10 minutes.
In the meantime, wash parsley, dab dry and chop except for a little bit for garnishing. Season potato goulash with salt and pepper, arrange in deep plates and serve sprinkled with parsley and garnished.