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–+ servings
Slow cooker apple crisp served on a white plate with two scoops of vanilla ice cream, featuring tender cinnamon apples and a buttery oat crumble topping.
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Old Fashioned Apple Crisp with Oat Topping

This Old Fashioned Apple Crisp with Oat Topping is a cozy fall dessert made with cinnamon-spiced apples and a buttery oat crumble. This small batch recipe can be made in either the slow cooker or oven and is delicious served warm with vanilla ice cream.
Course Dessert
Cuisine American
Prep Time 10 minutes
Cook Time 2 hours
Total Time 2 hours 10 minutes
Servings 5

Ingredients

Apple Filling

  • 6 medium apples peeled, cored, and sliced
  • 2 tablespoons granulated sugar
  • 1 teaspoon ground cinnamon
  • ½ teaspoon ground nutmeg

Oat Topping

  • 1 cup brown sugar
  • ¾ cup old fashioned oats
  • ¾ cup all purpose flour
  • ½ cup cold butter cubed

Instructions

Instructions

  • Lightly butter the inside of a slow cooker crock or glass baking dish.
  • Peel, core, and slice the apples into a large mixing bowl.
  • In a small bowl, whisk together the sugar, cinnamon, and nutmeg. Sprinkle over the apples and toss until evenly coated.
  • Transfer the apple mixture to the prepared slow cooker or baking dish.
  • In a medium bowl, combine the brown sugar, oats, and flour.
  • Add the cold butter. Using a pastry cutter or your fingers, work the butter into the dry ingredients until the mixture resembles small peas.
  • Sprinkle the oat topping evenly over the apples.

Slow Cooker Method

  • Cover and cook on high for approximately 2 hours, or until the apples are tender and the filling is bubbling.
  • Allow the apple crisp to rest for 10 to 15 minutes before serving.

Oven Method

  • Bake in a preheated 350 degree oven for 35 to 45 minutes, or until the apples are tender and the topping is golden brown.
  • Allow the apple crisp to rest for 10 to 15 minutes before serving.
  • Serve warm on its own or with vanilla ice cream if desired.

Notes

  • Granny Smith apples add tartness while Honeycrisp, Fuji, Gala, and McIntosh apples add sweetness and flavor.
  • Avoid Delicious apples for baking as they contain more juice and are better suited for eating fresh.
  • Grating the cold butter makes it easier to combine with the oat topping.
  • Apple crisp can be enjoyed warm or cold, depending on personal preference.
  • Store leftovers covered in the refrigerator for up to 4 days.