Preheat Oven 325 degrees. Use Parchment lined cookie sheets.
Combine flour, baking soda and salt in a medium bowl, set aside.
In a large bowl,beat butter and both sugars together until well incorporated. Add the egg, yolk and vanilla, mix until incorporated.
With the mixer on low speed add the flour mixture to the bowl slowly until just combined.
Fold in nuts and chocolate.
Chill dough 30 minutes.
Preheat oven to 325°F and prepare baking sheets with parchment.
Using 1/4 cup measuring cup, scoop dough out, roll into a ball and place onto prepared baking sheets.
Bake until golden brown, 12 to 15 minutes. Cool completely before serving.