1 box Duncan Hines butter cake mix
4 eggs
2/3 c. milk
2/3 c. oil

Blend together. Grease heavy duty cookie sheet, 11"x17". Add batter. Bake at least 20 minutes at 350 degrees. Let cool.

CRUMBS:

4 c. flour
1 tbsp. cinnamon
1 stick melted butter
2/3 c. brown sugar
2/3 c. sugar
1 tbsp. vanilla

Add butter and butter to vanilla. Cool. Pour into flour mixture. Crumble over cake. Bake again 20 minutes. Sprinkle with confectioners' sugar after cake is cool.