1. Preheat the oven to 350°F (175°C).
2. Cream together the butter and brown sugar until light and fluffy.
3. Mix in the vanilla extract and egg until well combined.
4. In a separate bowl, whisk together the oat flour, baking powder, baking soda, sea salt, and cinnamon.
5. Gradually add the dry ingredients to the wet mixture, stirring until just combined.
6. Fold in the chocolate chips until evenly distributed.
7. Scoop rounded balls of dough onto a baking sheet, spacing about 2 inches apart, and bake for 10-12 minutes.
8. Let cool on the baking sheet for a few minutes before transferring to a wire rack.
