1 Duncan Hines buttercake mix (red box)
4 eggs
2/3 c. milk
2/3 c. vegetable oil

CRUMBS:

4 c. flour
2/3 c. brown sugar
2/3 c. granulated sugar
1 tbsp. cinnamon
3 sticks butter and/or butter (1 1/2 c.)
1 tbsp. vanilla

Grease and flour jelly roll pan or cookie sheet with sides. Blend cake ingredients for 4 minutes at medium speed. Bake for 20 minutes at 350 degrees. To make crumbs, melt butter with vanilla and cinnamon; cool. Mix in flour and sugars with hands. Spread crumbs on top of cake. Bake 20 minutes at 350 degrees. When cool, sprinkle top with sifted powdered sugar.