1 box yellow cake mix
4 eggs
3/4 c. cooking oil
2/3 c. water
1 c. sour cream
1 c. brown sugar
3 tsp. cinnamon

Mix cake mix, eggs, oil, water and sour cream. In separate bowl mix brown sugar and cinnamon. Pour half of batter in pan, sprinkle half of sugar mixture over batter and swirl it in. Pour remaining batter in pan and sprinkle rest of sugar mixture in and swirl it in.

Bake in 9x13 inch cake pan at 325°F. for 40 minutes or until cake tests done.

4 tbsp. milk
2 c. confectioners' sugar
1 tsp. vanilla

Combine together and pour over hot cake.