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5 from 31 votes

Apple Crumble Bars

Learn how to make the most delicious fall dessert - apple crumble bars! These bars are easy to throw together and perfect for when you’ve gone apple picking!
Prep Time15 minutes
Cook Time55 minutes
Total Time1 hour 10 minutes
Course: Bars & Brownies
Servings: 12 -16 pieces
Author: Marzia

Ingredients

Apple filling:

  • 2 lbs of apples ~ 4 medium-ish apples (peeled, cored, finely diced)
  • 2 tablespoons cornstarch
  • 1/4 cup brown sugar
  • 1 teaspoon EACH: lemon juice and vanilla
  • ½ teaspoon ground cinnamon
  • teaspoon nutmeg

Crumble:

  • 2 cups old-fashioned rolled oats
  • 2 ½ cups all-purpose flour
  • 1 cup brown sugar
  • ½ cup granulated sugar
  • 1 cup melted salted butter
  • 1 teaspoon EACH: baking powder and ground cinnamon

Instructions

  • APPLES: In a bowl, toss together all the ingredients for the apples; set aside. Line a 12x9.5 pan with parchment paper; set aside.
  • CRUMBLE: Position a rack in the center of the oven and preheat the oven to 350ºF. Mix the oats, flour, sugars, baking powder, and ground cinnamon together in a large bowl. Pour in the melted butter and stir to combine until you form a sand-like crumb. Press two-thirds of the prepared crumb mixture into the prepared pan. You want to make sure the crust is tightly packed in.
  • BAKE: Top with the apple mixture and sprinkle the remaining crumb mixture on top. Bake for 50-60 minutes. Remove from the oven and place on a wire rack for one hour. I usually stick mine in the refrigerator for a bit after that to cool them down completely before cutting into pieces.

Notes

  • If you don’t have salted butter, add ½ teaspoon of salt to the crumble mixture.
  • I prefer these bars in a 12x9.5 pan because they are thicker that way and personally, I like the crust to apple ratio a lot here. But you can also bake these in a 13x9 pan, just be sure to check around the 45-50 minute mark as a larger pan will mean they will cook slightly faster.
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