This document provides a recipe for Mary Berry's Double-crust Apple Pie. It includes instructions for making the pastry from scratch and rolling it out. Apples are tossed with sugar, lemon juice, and cornflour before being placed in the pie tin and covered with the top pastry layer. The pie is baked for 40-50 minutes until the filling is soft and the pastry is pale golden. Tips are provided throughout for ensuring crisp pastry and a well-filled pie.