1Preheat oven to 300 degrees. Grease a 13x9 cake pan. Mix cake mix, eggs, sour cream, sugar and oil until moistened. Beat at medium speed for 2 minutes.
2Pour into pan. Mix brown sugar and cinnamon. Sprinkle over batter and swirl into batter with a knife.
3Bake for approximately 1 hour or until toothpick comes out clean. Cool and glaze.
4For Glaze: Mix ingredients to make a thin glaze and pour over cake... Use milk to make at desired consistancy.