Preheat oven to 400°F and line two baking sheets with parchment paper. Set aside.
In a medium bowl, whisk together the flour, baking powder, baking soda, and salt. Set aside.
1 ½ cups all-purpose flour, 1 teaspoon baking powder, ½ teaspoon baking soda, ½ teaspoon salt
In the bowl of a stand mixer, add the cold butter and granulated sugar and mix on medium speed for ~5 minutes, until mixture is light in color and fluffy. Stop the mixer and scrape the sides and bottom
½ cup unsalted butter, ¾ cup granulated sugar
Add egg and vanilla and mix on medium speed about 1 minute more, stopping to scrape the sides and bottom of the mixer.
1 large egg, 1 tablespoon vanilla extract
With mixer off, add in the dry ingredients and stir on low speed just until no flour streaks appear. Do not over mix, as this will affect the texture of the cookies. Stir in chocolate chips
1 cup semi-sweet chocolate chips
Using a large cookie scoop, scoop 3 ounce (80 g) balls of cookie dough. Set on parchment-lined baking sheets about 2-3 inches apart. Gently press additional chocolate chips in the tops of each cookie dough ball
Bake in preheated oven for 11-12 minutes until tops of cookies have turned lightly golden brown, rotating baking sheets halfway through. Centers of cookies may still look a bit raw or wet. They will continue baking from the residual heat of the baking sheets after you remove them from the oven
These cookies mayspread while baking. Just after removing them from the oven, use a round cookie cutter just slightly bigger than the cookies (approximately 3-4 inches in diameter) to scoot cookies into rounds, if needed and/or desired
Allow cookies to cool at least 15 minutes of baking sheets before removing