Preheat oven to 350 degrees F. Lightly oil a 9-x-13-inch Pyrex dish. Combine sugar, flour and cinnamon. In a large bowl, toss the apples with the flour mixture. Add the orange juice and the melted butter and toss to coat. Spread evening over the bottom of the prepared pan.
Make the topping. In a medium bowl, combine cereal, pecans and cinnamon. Toss with butter and maple syrup and spread evenly over the apple mixture.
Set in the center of the preheated oven. Bake 45 to 60 minutes or until the apple mixture is bubbly around the edges and the topping is golden brown.
Serve warm or cold.