Warm, tender cinnamon baked apples filled with brown sugar, oats, and spices are a comforting family dessert. This simple, wholesome treat fills your kitchen with the cozy aroma of fall.
Preheat your oven to 375°F (190°C) for even baking.
Core each apple, leaving the bottom intact to create a cavity, and place the apples upright in a baking dish.
In a small bowl, combine rolled oats, brown sugar, cinnamon, nutmeg, salt, and softened butter. Mix until crumbly, then stir in vanilla extract.
Carefully spoon the oat mixture into the center of each apple, gently packing but not overfilling.
Pour water into the baking dish around the apples, cover loosely with foil, and bake for 25 minutes; then uncover and bake for another 15-20 minutes until apples are tender but not collapsing. Serve warm.