Passover Cheese Pie from Hania

Although this pie is called tyropita by Nicholas Stavroulakis, it is not the familiar triangle-shaped filo pastry that most people recognize by that name. It is a mina or pastel de kwezo, that is, a cheese pie. Using just mezithra and/or feta and Parmesan makes for a dryish but tasty filling, despite the 6 eggs. I suggest adding some ricotta to the mix, using perhaps 1 cup in p