Sift flour, baking soda, and salt together. Set aside.
Using a mixer cream butter and sugar together until fluffy.
Add in egg and vanilla and beat again for about 1 minute.
Slowly fold in the dry ingredients and then the chocolate chips.
Scoop out the dough using a cookie scoop, about 2 tablespoons, and roll the dough into balls. Place on a plate or a lined baking tray and chill for at least 2 hours (you can leave up to 3 days though, make sure they are covered with clingfilm).
Preheat oven to 350°F and line a cookie sheet with parchment paper.
Bake for 12-14 minutes or until the edges are just barely golden.
Cool on the cookie sheet for a few minutes before transferring to a cooling rack to cool completely.
Notes
Leftover chocolate chip sugar cookies will keep for up to one week in an airtight container at room temperature on the kitchen counter or for up to 3 months in the freezer. Thaw at room temperature until soft enough to eat.