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The Best Crispy & Easy Sheet-Pan Apple Crumble

A close-up of a warm bowl of Sheet-Pan Apple Crumble with a scoop of vanilla ice cream melting on top.

A large-batch apple crumble made on a sheet pan, perfect for a crowd and for those who love a generous amount of topping. This recipe features a layer of thinly sliced baking apples tossed with lemon juice, brown sugar, and cinnamon, which are par-baked until they soften. The apples are then covered with a hearty, crumbly topping made from old-fashioned rolled oats, flour, and brown sugar. The crumble is baked uncovered until the top is crisp and golden brown and the fruit juices are bubbly.

Ingredients

Scale
  • 7 medium baking apples, such as Gala or Fuji (about 3 pounds)
  • 1 tablespoon fresh lemon juice
  • 1 1/2 cups packed light brown sugar
  • 2 sticks (16 tablespoons) unsalted butter, melted
  • 2 teaspoons ground cinnamon
  • Kosher salt
  • 2 cups old-fashioned rolled oats
  • 1 1/2 cups all-purpose flour
  • Vanilla ice cream, for serving

Instructions

  1. Position a rack in the center of the oven and preheat to 425°F.
  2. Peel and core the apples, then cut them into 1/4-inch-thick slices.
  3. Place the apple slices on an 18-by-13-inch sheet pan. Toss them with the lemon juice, 1/4 cup of the brown sugar, 2 tablespoons of the melted butter, 1 teaspoon of cinnamon, and 1/8 teaspoon of salt.
  4. Spread the apples evenly on the pan, cover tightly with foil, and bake for about 20 minutes, until the apples have softened and released some liquid.
  5. Make the Topping: While the apples are baking, combine the oats, flour, the remaining 1 1/4 cups of brown sugar, 1 teaspoon of cinnamon, and 1 teaspoon of salt in a large bowl.
  6. Add the remaining melted butter to the oat mixture and stir with a fork until it is moistened and crumbly.
  7. Finish Baking: Carefully remove the foil from the sheet pan of hot apples. Scatter the oat crumble evenly over the top.
  8. Return the pan to the oven and bake, uncovered, for about 15 more minutes, until the top is crisp and golden brown and the juices are bubbly.
  9. Let it cool slightly and serve warm with vanilla ice cream.

Notes

  • This recipe is made on a large 18×13-inch sheet pan, which creates a thinner layer and a higher ratio of crispy topping to fruit.
  • The two-stage baking process—first baking the apples covered, then adding the topping and baking uncovered—ensures the apples are tender and the topping is perfectly crisp.
  • Using a mix of baking apples like Gala or Fuji provides a good balance of sweet and tart flavors.

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