Tyropita (cheese pies) are a traditional Greek dish that is made with a variety of cheeses, including feta, kasseri, and kefalotyri, and often includes herbs, spices, and other flavorings. The pies are typically baked in a pastry dough, although some versions are made with phyllo dough.
Mash the feta cheese with a fork and add the kefalograviera, milk, butter, dill (or mint), eggs and pepper. Butter a pan with the margarine and place half the sheets of fyllo on the bottom also buttered with the margarine (so it doesn't stick) Pour the cheese mix and cover with the rest of the fyllo sheets, also buttered with margarine. Bake in medium oven for about 1 hr.