Prepare the cupcake pans with liners. I use glassine liners as they release from the cupcakes easily.
Preheat oven to 325°
In a large mixer bowl add the cake mix, flour, sugar, and salt, and mix well.
Add in the water, egg whites, melted butter, sour cream, oil, vanilla, and cinnamon.
Mix in low to combine, then turn the speed to medium to mix completely for 1 minute,
Turn off and scrape down the sides and the bottom completely and mix for another 30 seconds or until well mixed, can increase to medium-high speed for the last 30 seconds.
Place 3 tablespoons of batter into each cupcake liner.
Bake for 18 minutes, and test with a toothpick, when the toothpick comes out clean with no wet batter, remove from the oven.
Allow cupcakes to cool for 10 minutes in the pan, then remove from the pan and allow to cool completely on a cooling rack.
If you prefer fluffy cupcakes no need to refrigerate them, if you prefer the cupcakes to be denser than fluffy, refrigerate them, and the result will have a more homemade texture.
Make the frosting and caramel, those recipe links are in the post