In a medium bowl whisk flour, baking soda and salt, set aside

In a large bowl beat butter with sugars until light and fluffy about 2 minutes. Beat in egg, egg yolk.and vanilla

Add flour mixture to butter mixture and stir just until.well blended. Don't overmix

Stir in dark chocolate chips and pistachios

Roll into 1 1/2 inch balls and place 2 inches apart on prepared baking sheet. With the palm of your hand or fingertips press each cookie ball gently to flatten slightly

Bake 10 to 12 minutes just until.just set and lightly golden, don't overbake for chewy cookies. Let rest on baking sheet 5 minutes then transfer to wire rack to cool.completely