Big, fat, chewy choco chip cookies

•2 cups all-purpose flour
•½ teaspoon baking soda
•½ teaspoon salt
•¾ cup unsalted butter, melted and slightly cooled
•1 cup packed brown sugar
•½ cup white sugar
•1 tablespoon vanilla extract
•1 egg
•1 egg yolk
•2 cups semisweet chocolate chips