Take the chilled dough out of the fridge about 20 minutes before rolling.
Roll the dough out on a lightly floured piece of baking paper, dusting both the dough and the rolling pin to prevent sticking. Roll it into a large circle about 2mm thick and 4-5 inches wider than your pie dish so it covers the sides easily. If the dough softens, pop it back into the fridge for a few minutes before continuing.
Using the baking paper, lift and transfer the rolled dough into the pie dish. Gently press it down into the base and sides, peeling off the paper. Patch up any small cracks or gaps with leftover dough.
Cover the pie base with cling film and keep it refrigerated while you get the filling ready.
Spoon the prepared apple filling into the chilled crust, avoiding excess liquid from the bowl. Then, roll out the remaining dough for the top crust. You can either cut it into strips for a lattice or keep it whole for a full top layer. If it becomes too soft, chill it briefly before using.
If using a solid top, remember to make a small vent in the center so the steam can escape. Chill the assembled pie for about 15 minutes before baking.
Preheat the oven to 200°C. Brush the top of the pie with an egg wash and sprinkle some sugar for a golden, crisp finish.
Bake at 200°C for 20 minutes, then reduce the heat to 180°C and continue baking for another 40–60 minutes, or until the crust turns golden and the filling bubbles through the vents. If the crust darkens too quickly, cover it loosely with foil near the end of baking.
Let the pie cool for at least 4–6 hours, or overnight, to allow the filling to set before slicing. Serve warm with a scoop of vanilla ice cream or a drizzle of custard.