BASE:

Duncan Hines butter mix
2/3 c. oil
2/3 c. water
4 eggs

Mix base then bake at 350 degrees for 30 minutes in a greased jelly roll pan or a large cookie sheet.

CRUMBS:

1/2 c. brown sugar
1/2 c. white sugar
1 tbsp. cinnamon
3 c. flour
2 sticks butter, melted
1 tbsp. vanilla

Mix ingredients for crumbs and crumble on cake. Bake additional 20 minutes. Sprinkle confectioners' sugar on top when cold.