- 5 cups peeled and sliced apples
- 1/4 cup brown sugar
- 1/4 cup white sugar
- 1/4 cup all-purpose flour
- 3/4 teaspoon ground cinnamon
- Topping:
- 3/4 cup all-purpose flour
- 3/4 cup quick-cooking oats
- 2/3 cup brown sugar
- 2 tablespoons brown sugar
- 1/3 cup butter, melted
- 1 (9 inch) deep-dish pie shell
- Preheat oven to 400 degrees F (200 degrees C).
- Mix apples, 1/4 cup brown sugar, white sugar, 1/4 cup flour, and cinnamon together in a bowl.
- Combine 3/4 cup flour, oats, and 2/3 cup plus 2 tablespoons brown sugar in a bowl. Drizzle melted butter over flour mixture; stir until crumbly.
- Pile apple mixture into the pie shell. Scatter crumbly topping over apples.
- Bake in the preheated oven until apples start to soften, about 15 minutes. Reduce oven temperature to 350 degrees F (175 degrees C). Continue baking until apples are soft and topping is browned, about 40 minutes more.