Mix the meat with the gyros spice, finely diced onion and the oil and marinate for about 2 hours (overnight is even better).
Cook the spaetzle according to the instructions on the packet.
Let a pan get hot, add the meat without adding any oil and fry until crispy brown on all sides over a medium heat. Add 1 cup of cream and let it reduce. Then add the second cup of cream and simmer until the sauce is a bit thick.