Preheat the oven to 375°F
Wash and core the apples
Place the apples in a baking dish
Fill the centers with sugar, cinnamon, butter, or nuts if desired
Add a small amount of water to the bottom of the dish
Cover the dish with foil if you want softer apples
Bake for 25 to 40 minutes until tender
Remove from the oven and let cool slightly
Serve warm