Making baked apples is a simple process that can be broken down into a few easy steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C).
2. Prepare the Apples: Core the apples, creating a hollow center, but be careful not to pierce the bottom.
3. Make the Filling: In a bowl, combine brown sugar, rolled oats, chopped nuts, ground cinnamon, ground nutmeg, melted butter, and raisins (if using). Mix until well combined.
4. Fill the Apples: Spoon the filling mixture into the cavity of each apple, packing it tightly.
5. Place in Baking Dish: Arrange the filled apples in a baking dish. Pour the apple juice or water into the bottom of the dish to help steam the apples.
6. Bake: Cover the dish with aluminum foil and bake for 20 minutes. Remove the foil and bake for an additional 10-15 minutes, or until the apples are tender.
7. Check for Doneness: The apples are done when they are soft but still hold their shape. You can test this by gently poking them with a fork.
8. Serve Warm: Remove from the oven and let them cool slightly before serving.

These steps will guide you in creating delicious baked apples that will impress everyone at your table.