1 box yellow cake mix
4 eggs
3/4 c. oil
8 oz. sour cream

Mix and pour 1/2 batter in 9 x 13 inch pan. 1 tbsp. cinnamon

Mix and sprinkle over batter. Pour in remaining batter and swirl slightly. Bake at 350 degrees for 30 to 40 minutes.

ICING:

Mix 2 cups confectioner's sugar with 4 or 5 tablespoons milk and 1 teaspoon vanilla. Pour over cake while hot.