01 -
Preheat oven to 175°C (350°F). Line a 23×33 cm (9×13 inch) tray or baking dish with parchment paper.
02 -
In a mixing bowl, toss apples and raspberries with lemon juice, sugar, cornstarch, and vanilla. Set aside.
03 -
In another bowl, whisk together flour, granulated sugar, brown sugar, baking powder, salt, and cinnamon.
04 -
Cut in cold butter using a pastry cutter or fingers until the mixture resembles coarse crumbs.
05 -
Add the egg and mix lightly to form a crumbly dough.
06 -
Press two-thirds of the mixture evenly into the base of the prepared tray.
07 -
Spread the fruit mixture evenly over the base.
08 -
Crumble the remaining dough over the top.
09 -
Bake for 40–45 minutes, or until golden brown and bubbling at the edges.
10 -
Cool in the tray for at least 20 minutes before slicing into squares. Serve warm with cream or custard, or cold as a snack bar.