Preheat oven to 450 degrees 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 degrees F. for 15 minutes. Reduce heat to 350 degrees 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.