- Prep Time : 15 minutes
- Cook Time : 40 minutes
- Mix together the cake mix, eggs, oil, and the sour cream in a bowl with a mixer.
- Pour half of cake mix batter in a dish.
- Mix together the brown sugar and the cinnamon.
- Put the brown sugar and cinnamon mixture over the cake mix in the dish.
- Pour the rest of the batter over the brown sugar and cinnamon mixture. Cook for 40 minutes.
- When you take the cake out of the oven, poke holes in the top.
- Mix together the powdered sugar, milk and vanilla. Pour over the cake.