1) Combine cake mix, 1 egg and oil until crumbly. Set aside 1 cup for topping.
2) Press the remining crumb mixture into a greased 13 x 9 x 2" baking pan. Bake at 350 degrees for 15 min.
3) Beat cream cheese until smooth; add the sugar, extract and remaining egg. Spread over crust
4) Sprinkle with reserved crumb mixture
5) Bake for 15-30 minutes or until golden brown.
6) Cook on a wire rack.
7) Refrigerate leftovers.