Lol, yes prasopita is standard greek fare. It is absolutely delicious and a favorite at any party. The supposed cheese you are referring to is feta of course. Omit at your own peril - the briny salty feta is what counteracts with the sweetness of the leek. And yes I strongly advocate the use of herbs such as parsley or mint, even dill can be used. I also like to add scallions. Super easy to make.