Preheat the oven to 325°F

Grease cookie sheet or line with parchment paper

Sift together the flour, baking soda, and salt; set aside

In a medium bowl, cream together the melted butter, brown sugar, and white sugar until well blended

Beat in the vanilla, egg, and egg yolk until light and creamy

Mix in the sifted ingredients until just blended

Stir in the chocolate chips by hand using a wooden spoon

Drop cookie dough 1/4 cup at a time onto the prepared cookie sheets

Cookies should be about 3 inches apart

Bake for 15-17 minutes in preheated oven, or until the edges are lightly toasted

Cool on baking sheets for a few minutes before transferring to wire racks to cool completely