01 - Peel, core, and slice apples into 1/4-inch wedges.
02 - Combine melted butter, sugar, and cinnamon in a bowl. Add apple slices and toss until evenly coated.
03 - Mix oats or breadcrumbs, flour, and salt in a separate bowl. Dredge buttered apple slices in the mixture to coat thoroughly.
04 - Place coated apple slices in a single layer in the air fryer basket.
05 - Cook at 375°F for 10-12 minutes, shaking the basket halfway through cooking, until apples are golden and crispy.
06 - Serve warm, optionally topped with whipped cream or vanilla ice cream.