1 Duncan Hines yellow cake mix
1 lb. butter, melted (1/2 butter)
1/3 c. sugar
4 c. flour
3 tsp. cinnamon
3 tsp. vanilla
1 tsp. vanilla added to cake mix

Grease and flour pan - cookie sheet. Oven, 350 degrees; bake cake 20 minutes.

Mix remaining ingredients in large bowl. Crumble on top of cake and bake 20 more minutes. When cooled, sprinkle with confectioners' sugar. Cover with foil. Best baked 1 day before serving.