Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.
In a large bowl, cream the butter and cream cheese until light and fluffy.
Add in the sugar and mix until combined. Crack in the egg and vanilla extract, then beat until smooth.
In a separate bowl, whisk together the flour, baking powder, baking soda, salt, and cinnamon.
Gradually add the dry ingredients to the wet mixture, mixing just until no streaks remain.
In a small bowl, mix cinnamon and sugar for rolling.
Scoop tablespoon-sized portions of dough and roll them into balls.
Roll each ball in the cinnamon sugar mixture and place on the baking sheet about 2 inches apart.
Bake for 10–12 minutes, or until the edges are set but the centers are still soft.
Cool on the sheet for 5 minutes, then transfer to a rack to finish cooling (or eat one warm—no judgment).