
Preheat the oven to 350 F. Prepare a baking sheet by lining it with parchment paper.
Using a stand mixer or a hand mixer, cream together the softened butter and sugars until fluffy, about 30 seconds to 1 minute.
Add in the egg and vanilla extract and mix until just combined.
Add in the baking soda, salt, and flour and mix until just combined. Don't overmix.
Gently fold in the chocolate chips by hand.
Using a standard cookie scoop (1.5 to 2 tbsp), transfer the dough to the prepared baking sheet, leaving about 3 inches of space in between.
Bake on the middle rack for 6 minutes. Rotate the tray 180 degrees and bake for another 6-9 minutes. The edges should be browned and the center golden. Sprinkle with flaky sea salt. Allow to cool for about 10 minutes before serving. For best results, enjoy within 1-2 days.