Apple Custard Pie with Saffron & Cardamom

Name: Apple Custard Pie with Saffron & Cardamom
Cook time: 6 h
Total time: 6 h
Cuisine: Asian, Indian
Ingredients: ¾ cup whole-wheat pastry flour; ¾ cup all-purpose flour; ¼ teaspoon salt; 4 tablespoons (1/2 stick) cold unsalted butter, cut into 1/2-inch pieces; 3 tablespoons canola oil, chilled; 3 tablespoons ice water; 6 tablespoons (3/4 stick) unsalted butter; 2 tablespoons packed brown sugar plus 3/4 cup, divided; 2 medium green baking apples, such as Granny Smith, thinly sliced; 2 red baking apples, such as Cortland, thinly sliced; ¾ teaspoon ground cardamom; ¼ teaspoon saffron threads; 2 large eggs; ¾ cup whole milk; ½ cup all-purpose flour