This granny smith apple crumble tops tart, tender apples with a buttery oat streusel that bakes into a golden, crisp blanket.
It is a simple dessert that uses pantry items and a single baking dish. Plan on about 55 minutes including a short rest, and serve it warm with vanilla ice cream while the topping is still crisp.
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Why This Granny Smith Apple Crumble Recipe Works
Granny Smith apples hold their shape in the oven and stay pleasantly tart, which balances the sweet brown sugar topping. Softer apples can turn to sauce, so firmness matters.
Melted butter makes the topping easy. You stir it together in a bowl with no cutting in cold butter, and it clumps like wet sand that bakes into crunchy clusters.
A tablespoon of flour in the filling thickens the juices so the apples bubble up into a spoonable syrup instead of a watery puddle.
Ingredients for Granny Smith Apple Crumble
- 2 lb Granny Smith apples (weight before peeling)
- 1 tbsp all purpose flour
- 1/2 cup granulated sugar
- 2 tbsp lemon juice
- 1/2 tsp ground cinnamon
- 1 cup old fashioned rolled oats
- 1 cup all purpose flour
- 1 cup brown sugar, loosely packed
- 1/2 tsp baking powder
- 1 tsp ground cinnamon
- 8 tbsp unsalted butter (1 stick), melted
- 1 pinch kosher salt
Granny Smith apples. Their firm flesh and tart flavor stand up to baking. Peel them and cut into 1/2 inch cubes so they soften at the same pace.
Rolled oats. Old fashioned oats give the topping a chewy, nutty texture. Quick cooking oats also work but bake up a little softer.
Brown sugar. Measure it loosely packed. It adds a caramel note and moisture that helps the topping clump.
Cinnamon. A little in the filling and a full teaspoon in the topping spreads warm spice through every spoonful.
Unsalted butter. Melt it and let it cool slightly before mixing so it coats the dry ingredients without turning the topping greasy.
How to Make Granny Smith Apple Crumble
1. Heat the oven. Preheat the oven to 350 degrees F, for both a standard and a fan oven, and have a 1 1/2 quart baking dish ready.
2. Cut the apples. Peel the apples, core them, and cut into 1/2 inch cubes, working quickly so they do not brown.
3. Season the filling. Toss the apples with the flour, sugar, cinnamon, and lemon juice, then spread them evenly in the baking dish.
4. Mix the topping. In a bowl, stir the oats, flour, brown sugar, baking powder, cinnamon, and salt, then pour in the melted butter and mix until clumps like wet sand form.
5. Top and bake. Scatter the topping over the apples, breaking up any large clumps with your fingers. Bake 30 to 40 minutes, until the topping is deep golden and the apple juices bubble at the edges.
6. Rest briefly. Cover loosely with foil to keep it warm and let it stand 10 minutes so the apple syrup thickens before serving.
How to Serve Granny Smith Apple Crumble
Serve the crumble warm in shallow bowls with vanilla ice cream or whipped cream. For a dessert table, add cinnamon streusel coffee cake and cheesecake, or bake a batch of blueberry crumble muffins for brunch. Cinnamon rolls round out a fall breakfast spread.
How to Store and Reheat Granny Smith Apple Crumble
Let the crumble cool, cover it, and refrigerate for 3 to 4 days. Do not leave it out for more than 2 hours. Reheat portions in a hot oven at 350 degrees F for 10 to 15 minutes to re crisp the topping, or microwave single servings. Freeze the baked crumble for up to 3 months and thaw it overnight in the refrigerator.
Tips and Variations for Granny Smith Apple Crumble
Choose firm apples. Pick apples that feel heavy and hard, with no soft spots.
Cut evenly. Pieces about 1/2 inch thick cook through at the same rate as the topping browns.
Squeeze the topping. Pinch handfuls of topping into clumps before sprinkling for a craggy top.
Add nuts. Chopped pecans or walnuts mixed into the topping add crunch.
Use brown sugar in the filling. Swapping it for the white sugar gives a deeper caramel flavor.
Do not skip the lemon. Lemon juice brightens the apples and keeps them from tasting flat.
Check the edges. Look for bubbling juices around the sides, which means the filling is hot and thickened.
Watch the leavening. The small amount of baking powder lightens the topping, and see baking ingredient guidance from Iowa State University Extension for how it works.
Frequently Asked Questions About Granny Smith Apple Crumble
What apples work well for a granny smith apple crumble?
Granny Smith is the ideal fit because it stays firm and tart. Braeburn or Braeburn also work if you want a sweeter result.
Can I make a granny smith apple crumble ahead of time?
Yes. Assemble it up to a day ahead, cover, refrigerate, and bake straight from the refrigerator, allowing a few extra minutes.
How do I get a crisp topping on a granny smith apple crumble?
Press the topping into loose clumps rather than packing it flat, and bake until deep golden. A short rest lets it firm up.
Can I use quick oats?
Yes, quick cooking oats work, though old fashioned oats give a chewier texture.
Can I freeze it?
Yes. Freeze the baked crumble in an airtight container for up to 3 months, then thaw overnight in the refrigerator and reheat.
Granny Smith Apple Crumble
Equipment
- 1 1/2 quart baking dish
- Mixing bowls
- vegetable peeler
- Sharp knife
- Aluminum foil
Ingredients
Main Ingredients
- 2 lb Granny Smith apples weight before peeling, peeled and cut into 1/2 inch cubes, for the filling
- 1 tbsp all purpose flour for the filling
- ½ cup granulated sugar for the filling
- 2 tbsp lemon juice for the filling
- ½ tsp ground cinnamon for the filling
- 1 cup old fashioned rolled oats for the topping
- 1 cup all purpose flour for the topping
- 1 cup brown sugar loosely packed, for the topping
- ½ tsp baking powder for the topping
- 1 tsp ground cinnamon for the topping
- 8 tbsp unsalted butter 1 stick, melted, for the topping
- 1 pinch kosher salt for the topping
Instructions
Cooking
- Preheat. Heat the oven to 350 degrees F and get a 1 1/2 quart baking dish ready.
- Cut the apples. Peel, core, and cut the apples into 1/2 inch cubes.
- Season. Toss the apples with the flour, sugar, cinnamon, and lemon juice and spread them evenly in the dish.
- Mix the topping. Stir the oats, flour, brown sugar, baking powder, cinnamon, and salt together, then stir in the melted butter until the mixture looks like clumpy wet sand.
- Bake. Sprinkle the topping over the apples and bake 30 to 40 minutes, until the topping is golden brown and the juices bubble at the edges.
- Rest. Cover loosely with foil and let stand 10 minutes so the juices thicken. Serve warm with vanilla ice cream if you like.
