Finely chop the onion and parsley in a food processor
In a mixing bowl, add the ground beef, spices, salt to the chopped parsley and onions
Knead together well until evenly distributed. You can also put everything back in the food processor until you have a fine texture
Open the Lebanese flatbreads carefully and take a tablespoon or two of kafta and spread very thinly (no more than 2mm)
Place the other half of the bread on top, and prepare the rest of the breads in the same way
If you are grilling on the barbecue, place in the arayes in a metal basket and clamp down. Grill on both sides for a few minutes until golden.
If you are using a panini griddle, heat up the hot press and when ready place the arayes for 5-10 minutes checking on it every so often, and turning when one side is done.
If you are using a hot pan, heat up the pan for 5 minutes at least, then transfer the arayes and press down with a lid, also checking every few minutes until golden on both sides
Serve with lemon wedges and an extra sprinkle of sumac