To Prepare the Filling:

Cook the cleaned spinach in boiling water. Drain and squeeze in a strainer to remove as much water as possible, then chop it with a knife.

Melt 6 soup spoons of butter in a saucepan. Add the finely chopped onions and brown for 5 minutes. Add the spinach, some salt and pepper and cook for 15 minutes, stirring from time to time.

To Prepare the Borek:

Proceed the same as in the recipe "Baked Borek" with cheese and ground meat, (see above), with the difference being that it is not necessary to use the egg, yoghurt and milk preparation between the "yufka." It is necessary only to generously butter both the baking dish and the surface of the last "yufka" that is put into place before putting the borek into the oven.