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

Combine all of the above. Mix well and place one half batter in greased 9x13 pan.

Combine: 1 c. brown sugar 4 tsp. cinnamon

Sprinkle about 2/3 of this over cake batter then the remaining cinnamon mixture. Swirl a knife through all of this to slightly mix. Bake 45 minutes at 300 degrees.

GLAZE:

2 c. powdered sugar
2 tsp. vanilla
4 tbsp. milk

Combine and pour over cake while hot.