Preheat oven to 325°F Fahrenheit. Grease cookie sheets or line with either parchment paper or silicone baking pads

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

In medium bowl, cream together the melted butter, brown and white sugars until well blended.

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

Slow incorporate the flour mixture until well blended.

Stir in chocolate chips.

Show the dough, then drop one quarter cup at a time on to the prepared cookie sheets. Cookie should be about 3 inches apart.

Bake for 15 to 17 minutes in the preheated oven, or until dad use our lately Brown. Check the cookies after 7 or 8 minutes and rotate the baking sheet for even browning. Cool on baking sheets for a few minutes before transferring to wire racks to cool completely. Store in an airtight container.