1 pkg. yellow cake mix
1 pkg. instant vanilla pudding
4 eggs
1/2 c. oil
8 oz. sour cream
3/4 c. sugar
2 tsp. cinnamon
1 tsp. cocoa

Mix cake, pudding, eggs, oil and sour cream. Mix high speed for 2 minutes. Pour half of mixture in 9 x 13 inch greased and floured pan. Mix sugar, cinnamon and cocoa; sprinkle half on cake mixture. Pour remaining batter and follow with sugar mixture. Make circles through batter with knife. Bake at 350 degrees for 40-45 minutes.