These Mini Apple Oat Crumble Cups are warm, cozy, and perfectly portioned mini desserts that bring together tender cinnamon-spiced apples and a buttery oat crumble topping. Baked in muffin cups, they’re easy to serve, naturally comforting, and ideal for fall or anytime you want a quick homemade treat. These cups deliver the classic flavor of apple crumble in a fun, handheld form—perfect for gatherings, meal prep, or a light sweet snack.