Mince Pies with Cinnamon and Orange Pastry

I hadn't made mince pies since I was a little girl, but thought these were lovely with the extra flavour in the pastry.
YOU WILL NEED (for about 16)
225g plain flour
4 tablespoons icing sugar
2 teaspoons ground cinnamon
150g butter, softened
2 tablespoons orange zest
4 tablespoons ice water
200g mincemeat
1 egg, beaten
icing sugar for dusting
METHOD
1.
Preheat oven to 200 C / Gas mark 6.
2.
Sift together the flour, icing sugar and cinnamon. Mix in the butter until mixture resembles fine breadcrumbs. Stir in the orange zest. Sprinkle with ice water, and gather the dough into a ball. Roll out on a lightly floured surface to 5cm thick. Cut out approximately 16 (7cm) diameter circles, and 16 (5cm) circles, rerolling dough as needed.
3.
Line cake trays using the larger pastry circles. Fill each pastry shell with about one tablespoon of mincemeat. Top with smaller pastry circles, pinching the pastry together to seal the edges. Brush the top of each pie with egg.
4.
Bake pies in preheated oven until tops are golden brown, for about 15 to 20 minutes. Cool slightly on wire racks. Dust with icing sugar just before serving.