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Apple Crisp {Slow Cooker}

Tart apples work best in this recipe. Granny Smith are excellent here. If you prefer not to use almonds in the recipe, increase the old-fashioned oats for the almonds by 1/2 cup. Also, it's important to place a dish towel or paper towels on top of the slow cooker before placing the lid on the cooker. This will ensure your oat mixture is in fact crisp.
Prep Time15 mins
Cook Time3 hrs
Total Time3 hrs 15 mins
Course: Dessert
Servings: 8
Author: Good Dinner Mom


  • For the apples:
  • 8 tart apples like Granny Smith, peeled, cored and thinly-sliced
  • 1 tablespoon lemon juice
  • 1/3 cup packed brown sugar
  • 2 teaspoons ground cinnamon
  • pinch of salt
  • For the crisp topping:
  • 1 cup uncooked old-fashion oats
  • 1/2 cup sliced almonds or walnuts, optional
  • 1/2 cup all-purpose flour
  • 1/2 cup packed brown sugar
  • 1 teaspoon ground cinnamon
  • pinch of salt
  • 4 tablespoons melted butter or coconut oil for vegan option


  • Place aluminum collar at back half of a 6-quart slow cooker (about 4-inches tall and 14-inches long, 4 layers thick). If desired, line the insert with a slow cooker liner. Spray with cooking spray.
  • Add sliced apples and lemon juice to a large mixing bowl and toss to combine. Add the brown sugar, cinnamon and salt and toss until completely combined. Pour the entire mixture into the bowl of the slow cooker and spread everything out in an even layer.
  • In the same bowl you mixed the apples, whisk together the oats, almonds, flour, sugar, cinnamon and salt until evenly combined. Drizzle the melted butter over the mixture and then whisk until combined.
  • Place a dish towel or a few paper towels on top of the slow cooker, and place the lid on top of the towel(s). the towels will help soak up the condensation that forms along the top of the lid and keep the oat crumble nice and crisp.
  • Cook on high for 3-4 hours (this option produces a crisper topping), or on low for 6-8 hours. Remove the lid and towel(s) and serve immediately.
  • Cook's note: Since slow cookers heat up to different temperatures, if this is your first time using the towel method, check it an hour into cooking to ensure the towl is not too hot. I've used paper towels to absorb moisture in recipes for years and many professionally recommended recipes use this method as well. I'm required to advise you that you use this method at your own risk.