1 box yellow cake mix
4 eggs
8 oz. sour cream
3/4 c. oil
1/2 c. sugar
3/4 c. brown sugar
3 tsp. cinnamon
2 1/2 c. powdered sugar
2 tsp. vanilla
4 tbsp. milk

Mix first 5 ingredients and pour half of the mixture into a greased and floured 9 x 13 inch dish. Stir together brown sugar and cinnamon and sprinkle half over the cake mix. Pour in the remaining cake mix and top with rest of brown sugar mix. Bake at 275 degrees for 50-60 minutes.

FROSTING:

Mix powdered sugar, vanilla, and milk. Pour over hot cake.