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Stack of apple oatmeal bars.

Cinnamon Apple Oatmeal Crumble Bars

Heather Smoke
These apple oatmeal crumble bars have a cinnamon oatmeal crust and crumble topping, with spiced apple filling.

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5 from 3 votes
Logo with the initials CGK.
Prep Time 20 minutes
Cook Time 1 hour 10 minutes
Total Time 1 hour 30 minutes
Course Dessert
Cuisine American
Servings16

Ingredients
 

Apple Filling

  • 2 lbs apples, a combination of Honey Crisp and Granny Smith, (about 4 large apples or 6-8 small/medium apples)
  • 1 ½ tbsp lemon juice
  • ¼ cup granulated sugar
  • ¼ cup light or dark brown sugar, lightly packed
  • 2 tbsp all purpose flour
  • ½ tsp ground cinnamon
  • ¼ tsp ground nutmeg
  • ¼ tsp ground cloves
  • ¼ tsp ground allspice

Oatmeal Crumble

  • 1 ½ cups all-purpose flour, fluffed, spooned and leveled
  • 1 cup old fashioned rolled oats
  • ½ cup light or dark brown sugar, lightly packed
  • 1 tsp coarse Kosher salt (if using table salt, use half the amount)
  • 1 tsp baking powder
  • 1 tsp ground cinnamon
  • 1 cup unsalted cold butter, cut into tablespoons

Instructions
 

Apple Filling

  • Peel and core the apples, then chop into 1/2 inch pieces. Place in a saucepan.
  • Add the lemon juice, sugar, brown sugar, flour and spices, and toss the apples to coat in the mixture.
  • Bring the apples to a simmer over medium heat, stirring frequently. Reduce to medium low, and simmer, stirring frequently, for about 15 minutes, until the liquid is thick and syrupy and the apples have begun to soften.
  • Set aside to cool slightly.

Oatmeal Crumble

  • In a bowl, combine the flour, oats, brown sugar, salt, baking powder and cinnamon.
  • Add the cold butter, and use a pastry cutter to cut the butter in until moist and crumbly.

Bake

  • Preheat the oven to 350 F, and position a rack in the center of the oven. Lightly spray a 9-inch square baking pan with non-stick baking spray, or line with parchment paper.
  • Press half the oatmeal crumble mixture into the bottom of the pan, and bake for 20 minutes.
  • Remove the pan from the oven. Spread the apple filling over the hot crust, then sprinkle the apples with the rest of the oatmeal crumble.
  • Bake for about 35 minutes, until the topping is golden brown.
  • Let cool completely, at least 3-4 hours, if you want to cut neat squares, or you can serve it warm, topped with ice cream, if you don't mind it being a little messier.

Notes

Store the leftover apple oatmeal crumble bars in an airtight container at room temperature for 1 day, or in the refrigerator for up to 3 days.
Keyword Apple, Cinnamon, Crumble, Oatmeal, Oatmeal Bars
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