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

TOPPING:

2 c. confectioners' sugar
4 tbsp. milk
2 tsp. vanilla
1 c. pecans (optional)

Mix first 5 ingredients. Pour 1/2 of batter into a greased and floured 9 x 13 inch baking pan. Mix brown sugar and cinnamon. Put 1/2 mixture evenly over batter. Swirl with a spool. Add remaining batter, cover with remaining brown sugar mixture and swirl again. Bake at 325 degrees for 1 hour.

Make topping mixture and pour over cake while hot. Cool in pan. Very good while warm and without topping.