Mix all cupcake ingredients together, beating on low speed for 30 seconds and medium speed for two minutes.
Using an ice cream scoop, drop into prepared muffin pans.
Bake according to box directions.
Allow to cool completely before frosting.
To make the frosting, beat defrosted Cool Whip with powdered sugar and cinnamon on medium speed for 30 seconds or until desired consistency.
Frost your cupcakes.