Preheat oven to 350°F (175°C).
Spread the sliced apples in a greased 8-inch square baking dish.
In a bowl, combine the flour, brown sugar, and oats. Cut in the butter until crumbly.
Sprinkle the oat mixture over the apples.
Drizzle caramel topping over the crumble.
Bake for 30-35 minutes or until the topping is golden brown and the apples are tender.
Drizzle with additional caramel topping before serving, if desired.