Make the dough

• Mix the flour, sugar and salt in a bowl.
• Rub in the cold butter until crumbly, then add the egg and bring together into a smooth dough.
• Wrap and chill the dough.

Prepare the apples

• Peel, core and slice the apples.
• Toss them with the sugar and lemon juice.

Assemble the pie

• Roll out two thirds of the dough and line the pan.
• Fill with the apples.
• Roll out the remaining dough and cover the pie, sealing the edges.

Bake

• Bake the pie until golden and the apples are tender.
• Let it cool slightly, then sprinkle with cinnamon if desired.