- Heat the oven to 375°F (190°C).
- Whisk the flour, baking soda and salt in a small bowl.
- Beat the butter, both sugars and vanilla until creamy, 2 to 3 minutes. Beat in the eggs one at a time.
- Mix in the flour mixture on low speed until just combined. Stir in the chocolate chips and walnuts.
- Drop rounded tablespoons of dough onto ungreased baking sheets, 2 inches apart.
- Bake until golden at the edges, 9 to 11 minutes. Cool on the sheet for 2 minutes, then move to a rack.