Preheat your oven to 350°F (175°C) and line two baking sheets with parchment paper.

Whisk together the flour, baking soda, and salt in a medium bowl until well combined.

Cream together the butter, granulated sugar, and brown sugar in a large mixing bowl until light and fluffy.

Add eggs and vanilla extract to the butter mixture and mix until fully incorporated.

Gradually add the flour mixture into the wet ingredients, mixing just until combined.

Fold in chocolate chips and chopped walnuts until evenly distributed.

Drop heaping tablespoons of dough onto prepared baking sheets, leaving space between each cookie.

Chill the dough in the refrigerator for 30 minutes if time allows.

Bake the cookies for 10-12 minutes or until edges are golden brown and centers are set but still soft.

Let cookies cool on sheets for 5 minutes before transferring to a wire rack to cool completely.