1Preheat your oven to 180°C (350°F).
Peel, core, and slice the apples into thin wedges.
In a large bowl, mix the apple slices with 1 teaspoon of cinnamon and 1 teaspoon of nutmeg.
Spread the spiced apple slices evenly in a baking dish.
In another bowl, combine the rolled oats, brown sugar, and butter. Mix until the mixture resembles coarse crumbs.
Sprinkle the oat mixture evenly over the apples in the baking dish.
Bake in the preheated oven for 30-35 minutes, or until the topping is golden brown and the apples are tender.
Remove from the oven and let it cool slightly before serving.
Serve warm, optionally with a scoop of vanilla ice cream or a dollop of whipped cream.