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The Best Classic Apple Crumble Recipe with a Buttery Oat Topping

A close-up of a thick slice of apple crumble on a white plate, showing the gooey apple filling and crunchy topping.

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You need this recipe for the ultimate cozy dessert. This classic apple crumble features tender, cinnamon-spiced apples beneath a perfectly crisp, buttery oat topping. It is simple to prepare and serves as the best homemade apple crumble for any gathering.

Ingredients

Scale
  • 6 medium baking apples (like Granny Smith or Honeycrisp), peeled, cored, and sliced 1/4-inch thick
  • 1/4 cup granulated sugar (for apples)
  • 1 tablespoon all-purpose flour (for apples)
  • 1 teaspoon ground cinnamon
  • 1/4 teaspoon ground ginger
  • 1 tablespoon lemon juice
  • 1 cup all-purpose flour (for topping)
  • 1/2 cup rolled oats (not instant)
  • 1/2 cup packed light brown sugar (for topping)
  • 1/4 teaspoon salt
  • 1/2 cup (1 stick) cold unsalted butter, cut into small cubes

Instructions

  1. Preheat your oven to 375°F (190°C). Lightly grease an 8×8 inch baking dish or a 9-inch pie plate.
  2. Prepare the apples: In a large bowl, combine the sliced apples, 1/4 cup granulated sugar, 1 tablespoon flour, cinnamon, ginger, and lemon juice. Toss gently until the apples are evenly coated.
  3. Pour the apple mixture into your prepared baking dish and spread it into an even layer.
  4. Prepare the buttery crumble topping: In a separate medium bowl, whisk together the 1 cup flour, rolled oats, brown sugar, and salt.
  5. Cut in the cold butter cubes using a pastry blender or your fingertips. Work the mixture until it resembles coarse crumbs with some pea-sized pieces of butter remaining. This step creates the crisp apple crumble top you want.
  6. Sprinkle the crumble topping evenly over the apple filling. Do not press it down.
  7. Bake for 35 to 45 minutes, or until the topping is golden brown and the apple filling is bubbling around the edges.
  8. Let the apple crumble cool on a wire rack for at least 15 minutes before serving. This allows the filling to set slightly.
  9. Serve warm with a scoop of vanilla ice cream for the ultimate comfort food baking experience.

Notes

  • To prevent a soggy bottom, make sure your butter is very cold when making the topping.
  • For extra flavor, substitute 1/4 cup of the all-purpose flour in the topping with almond flour.
  • If you prefer a sweeter filling, increase the apple sugar to 1/3 cup.
  • This dessert is perfect served warm with vanilla ice cream or a drizzle of heavy cream.

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