Preheat oven to 350 degrees and line cupcake pan with liners
In a standing mixer beat sugar and butter until creamed
Add egg and mix until fully incorporated
Beat in vanilla extract, salt, baking soda, baking powder, and cinnamon.
Combine the heavy cream into the wet mixture
Add in flour, a little at a time.
Add in the sour cream
Spoon batter about 3/4 full.
Bake in the oven for about 22 minutes or until the center of the cupcake comes out clean with a toothpick.