Knead the meat, eggs, salt and pepper in a bowl. Make thick, flattened patties and fry them in butter. Then split them in half side-ways and put a fine slice of gruyere between the halves. Put the kofte on a buttered oven dish and place another slice of gruyere on each one. Place in a hot oven for 15 minutes.

NOTE: Kashar (kasar peynir) or cantal can be used instead of gruyere.