4 tart apples, peeled and sliced, or more to taste
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2 tablespoons white sugar
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2 tablespoons brown sugar
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1 ½ teaspoons ground cinnamon
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⅓ cup caramel topping
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2 tablespoons melted butter
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1 (15.25 ounce) package yellow cake mix
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1 cup oatmeal
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¾ cup butter
Instructions
Mix apples, white sugar, brown sugar, and cinnamon together in a slow cooker. Drizzle with caramel topping and melted butter.
Mix cake mix and oatmeal together in a bowl. Cut in butter using 2 knives or a pastry blender until mixture resembles coarse crumbs. Place on top of apple mixture in the slow cooker.
Cook on High until cooked down and golden on top, 2 1/2 to 3 hours.