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Oatmeal Cookie Apple Crisp

Oatmeal cookie apple crisp with a golden, oatmeal-based crumble and bubbling cinnamon apple filling. Baked until the edges caramelize and the topping forms crunchy chunks.
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Prep Time 20 minutes
Cook Time 45 minutes
resting 10 minutes
Total Time 1 hour 15 minutes
Servings: 8 servings
Course: Dessert
Cuisine: American
Calories: 420
Ingredients Equipment Method Notes

Ingredients
  

apple filling
  • 6 large apples
  • 0.333 cup granulated sugar
  • 2 tsp cinnamon
  • 0.25 tsp nutmeg
  • 2 tbsp cornstarch
  • 1 tbsp lemon juice
oatmeal cookie crumble
  • 2 cup rolled oats
  • 1 cup all-purpose flour
  • 1 cup brown sugar packed
  • 1 tsp cinnamon
  • 0.5 tsp baking soda
  • 0.5 tsp salt
  • 1 cup unsalted butter melted
  • 2 tbsp honey
  • 1 tsp vanilla extract
  • 0.5 cup raisins or dried cranberries optional

Equipment

  • 1 sheet pan

Method
 

Preheat and prep
  1. Preheat oven to 375F and grease a 9x13 baking dish.
  2. Arrange a rack in the middle of the oven so the topping browns evenly.
Make the apple filling
  1. Toss the apple slices with granulated sugar, cinnamon, nutmeg, cornstarch, and lemon juice, then spread the coated apples in the greased dish.
  2. Press the apples into an even layer so the filling bubbles consistently as it bakes.
Make the oatmeal cookie crumble
  1. Combine rolled oats, all-purpose flour, brown sugar, cinnamon, baking soda, and salt in a bowl until evenly mixed.
  2. Stir melted butter, honey, and vanilla extract together, then pour over the oat mixture.
  3. Toss until the mixture is evenly moistened and forms clumps.
  4. Fold in raisins or dried cranberries if using, then scatter the crumble in large chunks over the apples.
Bake and rest
  1. Bake for 40-45 minutes at 375F until the topping is golden and the filling is bubbling around the edges.
  2. Rest 10 minutes before serving so the apple filling thickens slightly and the topping stays crisp.

Notes

For best set, let the crisp rest the full 10 minutes—cutting too early can make the filling run. Refrigerate leftovers in an airtight container for up to 4 days; reheat individual portions in a 350F oven until warmed through. Freezing is not recommended for texture, but you can freeze assembled, unbaked portions and thaw overnight before baking. For a lighter version, replace half the butter with an equal amount of unsweetened applesauce in the crumble.