Preheat oven to 450° F
Meanwhile, in a large bowl, toss sliced apples and dates with flour and coriander. Drizzle juice concentrate over top and toss again.
Turn into pastry-lined pie plate. Cover with top crust and seal by fluting edges of pastry together. Cut slits in the top crust to allow steam to escape. Brush with a glaze just before baking, if you wish.
Bake at 450° F for 15 minutes. Reduce heat to 350° F and continue baking for 25 to 35 minutes until golden and juices are bubbling.
A rich dairy cream is often used for a pastry glaze. For a vegan version, mix 2 tablespoons alternative milk with 1 tablespoon pure maple syrup in a small bowl. Brush the top crust and edges with the glaze and pop the pie into your preheated oven.