Add eggs one at a time:
Reduce the mixing speed to low and carefully add one egg to the bowl. Beat the egg into the butter and sugar mixture for 30 seconds. Once the egg is fully incorporated, add the other egg to the mixer and mix for another 30 seconds.
Scrape the bowl and add vanilla extract:
Stop the mixer and scrape down the sides of the bowl and paddle again. Add the vanilla extract to the mixture and return the mixer to low mixer. Blend the ingredients for another minute.
Add the dry ingredients and chocolate chips:
Stop the mixer, scrape down the bowl and paddle, and then add all of the dry mixture to the bowl. Begin mixing the batter on low speed . After 30 seconds of mixing, begin sprinkling in the chocolate chips.
After all the chocolate chips have been added, stop the mixer and scrape down the bowl and paddle. Return the dough to the second speed of the Kitchen Aid for another minute.
Chill cookie dough:
After mixing, cover the bowl with a lid, plastic wrap or foil and refrigerate the dough for 30 minutes (or up to 3 days). Even if you want to freeze the dough later, you can chill the dough for 30 minutes to make it easier to scoop.
Preheat oven and prepare baking sheets:
Ten minutes before the cooling time is up, preheat the oven to 190 °C. Line two baking sheets with parchment paper or silicone baking mats.
Portion cookie dough:
After the dough has chilled, use a 2 or 3 ounce portion scoop or a lightly greased 1/4 cup measuring cup to scoop the dough into balls. Place scooped cookie dough at least 1/2 inch apart to allow for easy spreading during baking. You should be able to fit nine cookie portions on each baking sheet.
Bake cookies:
You will bake each batch of cookies separately in the oven. Bake the first tray of cookies for 12 minutes, rotating the pan halfway through baking (after 6 minutes) to ensure even browning.
After baking, remove the cookie pan from the oven and let it sit on the pan for another 3 minutes to transfer. The cookies will have browned edges, but will still look shiny in the center. They will continue to bake and set up while they cool.
Bake the next tray of cookies as you did the first, flipping halfway through baking.
Cool cookies on cooling rack:
Transfer cookies to a cooling rack to cool completely or enjoy while still warm.
