Preheat oven to 350.
In very large bowl, with mixer on medium speed, beat eggs 4 minutes or until light and fluffy.
Reduce speed to low. Beat in butter, sugars, vanilla, baking soda and salt.
Stir in flour, chocolate chips and walnuts (mixture will be very stiff).
Line 2 large cookie sheets with parchment paper. Drop dough by level ⅓ cups (or use 2.5 inch ice cream scoop), 2 inches apart onto prepared cookie sheets.
Bake cookies 23 to 26 minutes or until golden around the edges, rotating cookie sheets between upper and lower racks halfway through baking.
Transfer cookies to wire racks to cool
Repeat with remaining dough, using the same parchment.
Store your cookies in tightly covered container at room temperature for up to one week or in the freezer up to 3 months.