Ingredients
Equipment
Method
Prep and fill the baking dish
- Preheat the oven to 375°F and grease a 9x13 baking dish.
- Toss the apple slices with granulated sugar, brown sugar, cinnamon, nutmeg, cornstarch, and lemon juice, then spread the apple mixture in the prepared dish.
Make the oatmeal crumble
- Combine the oats, flour, brown sugar, cinnamon, and salt, then cut in the cold cubed unsalted butter until you have large, chunky clumps with visible butter bits.
- Scatter the crumble generously over the apples so every inch is covered.
Bake and serve
- Bake for 40-45 minutes at 375°F, until the topping is deeply golden and the apple filling bubbles at the corners.
- Rest for 10 minutes, then serve warm with vanilla ice cream.
Notes
For a thicker filling, use cornstarch exactly as listed and make sure the topping covers the entire surface so it crisps while the apples bubble. Refrigerate leftovers in a covered container up to 4 days; reheat in a 350°F oven until warmed through. Freezing is not recommended for the crumble texture. For a dairy-free swap, use vegan butter for the crumble and serve with dairy-free vanilla ice cream.
