Preheat the oven to 350 degrees F.
Line two large baking sheets with parchment paper.
In a medium bowl, whisk together the melted butter and brown sugar.
Add the egg and vanilla, and mix until fully combined.
Fold in the flour, baking powder, baking soda, and salt.
Lastly, fold in the chocolate chips.
Use a 3 tablespoon cookie scoop to portion the dough onto the two baking sheets.
Bake the cookies one tray at a time in the center of the oven for 11-13 minutes.
Once the cookies come out of the oven, immediately use a round cookie cutter or glass to scoot the edges in and make them perfectly round. Enjoy!