Apple Crumble Pie

Bahan-bahan (9 porsi)

• 1 and 1/2 cups (188g) all-purpose flour (spooned & leveled), plus more for work surface
• 1 Tablespoon (12g) granulated sugar
• 1/4 teaspoon salt
• 1/2 cup (8 Tbsp; 113g) cold unsalted butter, cubed
• 1/4 cup (60g/ml) ice-cold water, plus more as needed
• egg wash: 1 large egg beaten with 1 Tablespoon (15g/ml) milk
• 1/2 cup (100g) packed light or dark brown sugar
• 1 teaspoon ground cinnamon
• 3/4 cup (94g) all-purpose flour (spooned & leveled)
• 3/4 cup (95g) chopped walnuts
• 5 Tablespoons (71g) unsalted butter, melted and slightly cooled
• 10 cups (1.25kg) 1/4-inch-thick apple slices (about 8 large peeled and cored apples)*
• 1/2 cup (100g) granulated sugar
• 1/4 cup (31g) all-purpose flour (spooned & leveled)
• 1 Tablespoon (15g/ml) fresh lemon juice
• 1 and 1/2 teaspoons ground cinnamon
• 1/4 teaspoon ground cloves
• 1/4 teaspoon ground nutmeg
• 1 teaspoon pure vanilla extract