1 box Super Moist yellow cake mix
3/4 c. oil
4 eggs
1 (8 oz.) carton sour cream

Mix together and pour half into a Bundt pan. Mix 1 cup brown sugar and 2 teaspoons cinnamon. Pour half over first batter. Pour rest of other batter on this, then the cinnamon batter. Bake at 350 degrees for 40 minutes.

ICING:

1 box powdered sugar
1/4 c. milk
1 tsp. vanilla

Pour over cake while hot.