Preheat oven to 350°. Spray a bundt pan liberally with nonstick cooking spray and set aside.

In a large bowl combine white cake mix, cinnamon, melted butter, water and eggs. Mix together using a hand held mixer {or by hand} for two minutes or until the batter is thick and mixed. Pour into the prepared Bundt pan and spread out into an even layer.

Bake for 35-40 minutes or until a toothpick inserted in the center comes out clean. Let the cake cool on a cooling rack for 10 minutes. After 10 minutes, invert the cake onto a cake plate to cool completely.

While the cake is cooling melt the butter and combine the granulate sugar and cinnamon together.

Brush the cake with the melted butter and cover with the cinnamon sugar mixture. I used all of the butter and almost all of the cinnamon sugar. You want a thick layer of cinnamon sugar on the outside of the cake. Serve with a drizzle of caramel sauce {if desired}. Cover and store at room temperature for up to 5 days.