Preheat the oven to 375° F. Line a pan with parchment paper and set aside.
In the bowl of a stand mixer or with an electric hand mixer, cream together the butter and brown sugar until completely combined and creamy.
Scrape the sides of the bowl and add in the corn syrup, egg and vanilla extract. Mix until combined.
Add the flour, soda and salt. Mix until a very soft and almost sticky dough forms.
Add in your favorite chocolate chips and mix until evenly distributed.
Portion out your cookies using a #40 scoop or approx 1 1/2 tbsp of dough for each cookie.
Bake at 375° F for 7-9 minutes, or until the cookies have flattened and the edges and tops are starting to turn golden brown.
Sprinkle with flakey sea salt, if desired.
Good served warm but if you are wanting ultimate chewiness, store in an air tight container overnight before enjoying.