Ingredients
Pastry and glaze
Filling
Vanilla custard
Method
Pie
1.Preheat oven to 200°C. Whiz flour, walnuts, sugar, baking powder and butter, with a pinch of salt, in a food processor until mixture resembles breadcrumbs. Add water and pulse to combine, roll into a ball, wrap in food wrap and chill for 15 minutes.
2.Peel, core and thinly slice pears, then add sugar and toss to coat.
3.Roll pastry into a 30cm circle; the edges will look rustic. Transfer to a baking paper-lined tray that has been sprinkled with 1 tbsp semolina (this will create a crisp base). Brush pastry with yolk and sprinkle with rest of semolina (to prevent base becoming soggy).
4.Pile pears into centre, leaving clear a 5cm border all around. Top fruit with ginger and nuts then fold pastry edges over to semi-enclose fruit. Glaze pastry with egg white and sprinkle with sugar.
5.Bake for 25-30 minutes or until golden. Serve with vanilla custard
Vanilla custard
6.Gently heat milk and vanilla in a pot until it just starts to simmer. Remove immediately from heat and extract vanilla pod, scraping seeds back into milk before discarding pod.
7.Beat yolks and sugar until pale and thick in a medium bowl.
8.Pour warm milk into yolks while beating. Return to pot and place over another pot part-filled with hot water. Place over heat and stir constantly until custard coats back of a wooden spoon. Remove from heat immediately and pour into a jug.
9.Serve warm or chilled.