Use 2 sheets of the semi-thawed pastry to line a fluted tart tin approx. 25cm pressing and trimming neatly to fit, chill for 15 minutes.
Peel, core and slice envy™ apples thinly into a large bowl, sprinkle over sugar, lemon zest and cornflour and toss well to evenly coat the slices.
Arrange the apple slices in the pastry lined tart tin, laying as flat as you can.
Brush the egg wash around the pastry rim.
Cut 1 cm strips form the remaining pastry sheet and make a lattice pattern over the top of the apples, crimping down the edges once the lattice is completed.
Brush the tart with more egg wash and sprinkle with the cinnamon sugar.
Bake for 35-40 minutes or until the pastry is golden.
Allow to cool for at least 15 minutes before slicing.