You can call this sweet potato honeybun cake, or sweet potato dump cake, or even glazed sweet potato cake. I call it delicious and my new favorite holiday cake recipe!.
In a large mixing bowl, add the cake mix, sour cream, sweet potatoes, vegetable oil, eggs, and vanilla. Mix well then set aside
In a separate bowl, mix the brown sugar, cinnamon, and nutmeg. Mix well.
Grease a 9x13 cake pan, then pour in half of your cake batter. Spread out evenly. Then your brown sugar mixture, then the last of the cake batter. Do not mix.
Use a chopstick ( or fork or something ) and swirl the batter