Pastiera Napoletana to prepare a pastiera recipe it's very simple. First of all we have to prepare a shortcrust pastry with flour, butter, sugar and eggs and leave to stand. Then place cooked grain, milk, butter and lemon zest in a saucepan and cook over low heat, mixing with wooden spoon until mixture is creamy. Place ricotta, egg yolks, sugar and orange flower water in a bowl and whisk. Mix in the grain mixture and candied fruits. Then whisk the egg whites until stiff and mix in the stuffing, making sure all ingredients are combined. roll out shortcrust pastry in a greased pan and pour in filling. roll out remaining dough and cut strips to arrange on pastiera like a grid. bake the pastiera in oven at 200 ° for 1 hour and rotating it in 180° for other 15 minutes to ensure even browning. remove the pastiera from oven at set it to cool on a rack. allow the pastiera completely cool and before cutting into wedges to serve sprinkle powdered sugar.