1 box Duncan Hines yellow cake mix (red box, do not substitute)
4 eggs
2/3 c. milk
2/3 c. oil

Grease 11"x15" pan. Blend all the above ingredients for 4 minutes. Pour into pan and top with Crumb Topping below. Bake at 350 degrees for 30 to 35 minutes.

CRUMB TOPPING:

4 c. flour
2/3 c. brown sugar
2/3 c. sugar
1 tbsp. cinnamon
3 sticks butter
1 tsp. vanilla

Melt butter; add vanilla. Cool slightly. Pour into the flour, cinnamon and sugar mixture. Crumble with hands, but not too small. When cake is done and cooled, sprinkle with powdered sugar.