Directions:
Preheat your oven to the temperature indicated on the yellow cake mix package. Grease 9x13 baking dish.
In a large mixing bowl, combine the yellow cake mix, oil, eggs, and sour cream. Mix well until all the ingredients are well combined.
Put half the batter into baking dish.
Mix together ground cinnamon and brown sugar and sprinkle over entire cake. Pour over rest of batter.
Place the pan in the preheated oven and bake according to the instructions on the yellow cake mix package or until a toothpick inserted into the center comes out clean.
Once the cake is baked, remove it from the oven and allow it to cool in the pan for a few minutes.
Carefully remove the cake from the pan and place it on a serving platter or cake stand.
Mix together milk, powdered sugar, and vanilla extra for the glaze. Pour the warm glaze over the top of the cake, allowing it to drizzle down the sides.
Let the cake cool completely before serving. This will allow the glaze to set and enhance the flavors.
I await your comments! Enjoy!