Hey Laura,
Sounds like it could be a modified apple crisp. Put some toppping on
the bottom, and it'll turn gooey. Sounds pretty good, actually.
For topping like that, you can use a variety of things--(+brown sugar,
butter, flour): oats, nuts, grape-nuts, granola, Rice Krispies, etc.

Let us know if you try it.
Cheers!
Jeff