1. Preheat oven to 350 degrees.
2. Grease 9x13 pan (I prefer glass).
3. Combine flour, soda and salt in a small bowl.
4. Beat butter and brown sugar with mixer.
5. Add vanilla and eggs, beating until light and fluffy.
6. Beat in dry ingredients.
7. With a wooden spoon, stir in 1 cup chocolate chips and 1/2 cup chopped nuts.
8. Spread evenly in greased baking pan.
9. Top with remaining chocolate chips and walnuts.
10. Bake 30-35 minutes or until lightly golden (do not over bake if you like them chewy).
11. Cool on wire rack and cut into bars.