Pai Apel Saya yang Sempurna

Bahan-bahan (10 porsi)

• 2 x homemade shortcrust pastry ( this recipe, or store bought (Note 1))
• 1 egg (, lightly whisked)
• 2 tsp white sugar ((granulate/regular, not caster/superfine), optional (Note 2))
• 2 kg / 4 lb Granny Smith apples (, cored, peeled, halved, cut into 1 cm / 1/3" thick slices. (Note 3))
• 1 cup brown sugar
• 1 tsp ground cinnamon
• 1/2 tsp ground ginger
• 1/4 tsp ground nutmeg
• 3/4 tsp cooking/kosher salt
• 1 tsp unsalted butter
• Vanilla ice cream, cream