Preheat your oven to 375°F (190°C).
In a mixing bowl, combine flour, baking soda, and salt. Set aside.
In another bowl, beat together the butter, granulated sugar, and brown sugar until creamy.
Add eggs and vanilla extract to the butter mixture and beat well.
Gradually add the flour mixture to the wet ingredients, mixing until just combined.
Stir in the chocolate chips and chopped walnuts.
Drop rounded tablespoons of dough onto a baking sheet.
Bake for 10-12 minutes or until golden brown.
Let cookies cool on the baking sheet for a few minutes before transferring to a wire rack to cool completely.