1 pkg. Duncan Hines yellow butter cake mix
3/4 c. Wesson oil
1 tsp. vanilla
1/2 c. sugar
4 eggs
8 oz. sour cream
2 tbsp. brown sugar
2 tsp. cinnamon

FROSTING:

1 c. powdered sugar
2 tbsp. milk

Combine first 6 ingredients and beat well. In separate bowl, mix brown sugar and cinnamon. Pour enough batter into a greased bundt pan to just cover the bottom. Sprinkle 1/3 of brown sugar mix over batter. Repeat 2 more times. Bake at 325 degrees for 1 hour. Let cool in pan.