1 yellow cake mix
1 8 oz. carton sour cream
4 eggs
3/4 cup oil
1/2 cup sugar
3/4 cup brown sugar
3 tsp cinnamon
Mix cake mix, sour cream, eggs and oil
Pour half of mixture into a 13x9x2" pan
Sprinkle with half of sugar and cinnamon mixture
Pour in remaining cake batter
Sprinkle the rest of the sugar-cinnamon mixture on top
Bake at 275 for 50-60 minutes or until test done
(My oven takes about 55 minutes)
Icing:
4 cups powdered sugar
6-8 tsp milk
2 tsp vanilla
Mix and pour over hot cake.