Fry the meat in a little oil and add the onion. Remove the meat and place in a baking dish. Deglaze the gravy with the cream. Add the processed cheese and mix with the salsa sauce, tomato paste and vegetable stock powder. Season with salt and a little sugar and pour the sauce over the meat. If you like, you can also add a dash of Metaxa to the sauce. Cook at 180 ° C for 20 minutes. Finally, bake with feta cheese for 10 minutes.