1 box yellow cake mix
1 (8 oz.) container sour cream
3/4 c. oil
3 eggs
1 c. brown sugar
2 tsp. cinnamon

Mix cake, sour cream, eggs and oil; beat for 2 or 3 minutes. Pour 2/3 of batter in greased and floured tube pan (mix sugar and cinnamon). Sprinkle half of sugar mixture over batter, pour remaining batter then top with remaining sugar mixture. Bake at 350 degrees for 40 to 50 minutes. Glaze if desired.