1 box yellow cake mix
1/2 c. sugar
1 c. sour cream or buttermilk
3/4 c. oil
4 eggs
1 c. brown sugar
3 to 5 tsp. cinnamon

Mix cake mix, oil, eggs, sugar and buttermilk or sour cream; pour 1/3 of this batter into an ungreased 9x13 inch pan. Mix brown sugar and cinnamon; swirl 1/3 into batter. Continue until all is used. Bake at 350 degrees for 30 to 40 minutes.

GLAZE:

2 c. confectioners' sugar
4 to 5 tbsp. milk
1 tbsp. vanilla

Mix and put on hot cake making holes in cake with fork so glaze will run in.