Preheat oven to 350°F; line a 9x13-inch pan with parchment, leaving side overhang.
Whisk flour, baking soda, and salt in a medium bowl.
Whisk melted butter and both sugars in a large bowl until smooth.
Whisk in eggs and vanilla until well combined and slightly thickened.
Stir dry ingredients into wet just until no flour streaks remain.
Fold in chocolate chips evenly.
Press dough evenly into prepared pan, reaching edges.
Bake 23-25 minutes, until edges are golden brown and center barely set.
Cool completely in pan on wire rack at least 1 hour.
Lift out using parchment; cut into squares with a sharp knife.