Preheat oven to 375° F. In a mixing bowl, beat butter and shortening until light and creamy. Add sugars, salt and baking soda, and beat until creamy. Add vanilla and eggs; beat until light. Stir in flour; mix well. Stir in chocolate chips and nuts; mix well. Drop heaping tablespoon of dough on lightly greased cookie sheet (make 8 cookies per cookie sheet). Bake at 375° F for 12 minutes, or until lightly browned. Remove from oven and cool 2 minutes on cookie sheet. Remove from cookie sheet and let cool completely on wire racks. Yield: 72 cookies. *If using salted butter, add only ½ teaspoon salt |