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Easy Apple Crumble in a white bowl with a spoon
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3.74 from 15 votes

Easy Apple Crumble

Filled with tender, caramelized apples and topped with a sweet oat topping, this rustic, easy Irish Apple Crumble is always a crowd-pleaser. Even better topped with a scoop of vanilla ice cream!
Prep Time20 minutes
Cook Time1 hour
Total Time1 hour 20 minutes
Course: Dessert
Keyword: apple dessert, easy apple recipe, fall recipe
Servings: 8 servings
Author: Jess Smith via Inquiring Chef
Cost: $4.00


  • 8x8 Baking Dish (or similar size)
  • Mixing Bowls


Crumble Topping:

  • ½ cup All-Purpose Flour
  • ½ cup Brown Sugar (light or dark)
  • ½ cup Rolled / Old-Fashioned Oats
  • ½ tsp Cinnamon
  • ½ tsp Baking Powder
  • ¼ tsp Salt (1/2 cup butter = 1 stick / 8 Tbsp)
  • 1/2 cup Unsalted Butter, chilled and cubed

Apple Layer:

  • 2 lbs Apples, peeled, cored, and chopped (any firm, crisp variety)
  • 1 Tbsp Lemon Juice
  • 1 Tbsp All-Purpose Flour
  • 1/4 cup Brown Sugar (light or dark)
  • Pinch Salt


  • Preheat oven to 375° F.
  • Grease an 8x8 baking dish (or any similarly-sized casserole dish) with nonstick cooking spray.
  • In one bowl, make the topping by combining 1/2 cup all-purpose flour, 1/2 cup brown sugar, oats, cinnamon, baking powder, and 1/4 tsp salt. Stir to combine.
  • Use your hands to rub butter into dry ingredients until the mixture resembles dry sand. Store in the refrigerator.
  • In another bowl, stir together apples and lemon juice. Add 1 Tbsp all-purpose flour, 1/4 cup brown sugar, and a pinch of salt. Stir to fully coat the apples.
  • Transfer apple layer to prepared baking dish.
  • Use your hands to crumble the topping over the apples.
  • Bake for 45 to 55 minutes, until the apples are soft and bubbly and the top is golden brown. (Note: If using a dish that is smaller than 8x8 you will have a deeper layer of apples; add 5 to 10 minutes to the bake time.)
  • Let cool for 5 minutes before spooning into bowls.
  • Serve crumble on its own or top with vanilla ice cream and / or whipped cream.


Use rolled / old-fashioned oats. Quick-cook or instant oats will work, but won’t give the topping the same texture as rolled oats.
The olive oil in the topping is optional but I find that a little added oil helps the entire crust to get an even golden brown color while baking.
Use firm, crisp apples with a balance of tart and sweet like Honey crisp, Fuji, or Pink Lady. Golden Delicious are also great - their extra tart flavor also works well in combination with other apples. Avoid the common lunchbox favorite Red Delicious which will can turn spongy / mealy when baked.


Calories: 271kcal | Carbohydrates: 47g | Protein: 2g | Fat: 9g | Saturated Fat: 5g | Cholesterol: 20mg | Sodium: 81mg | Potassium: 207mg | Fiber: 4g | Sugar: 32g | Vitamin A: 298IU | Vitamin C: 6mg | Calcium: 42mg | Iron: 1mg