1 box Duncan Hines yellow cake mix
3 eggs
1 1/3 c. water
1 c. sugar
3 c. flour
2 tsp. cinnamon
2 1/2 tsp. vanilla
3 sticks butter
Powdered confectioners' sugar

Preheat oven to 350 degrees. Grease a large cake pan. Beat at medium speed for 2 minutes. Pour batter into pan and put into oven for 20 minutes.

While cake is in oven start making crumbs. Melt 3 sticks of butter. Let cool. In large bowl add 1 cup of sugar, 2 teaspoons cinnamon, 2 1/2 teaspoons vanilla plus the melted butter. Mix together. When cake is done, crumble this mixture on top of cake then bake for 17 minutes more. When cake has cooled sprinkle with confectioners' sugar.