Combine flour, baking soda, and salt in bowl, set aside. Cream together butter and shortening;add sugars, and vanilla;beat well. Add eggs one at a time, beating well after each addition. gradually beat in flour mixture, stir in chips and nuts. Drop by teaspoonful on ungreased baking sheets. Bake 9-11 minutes at 375*

and shortening in their recipe, and I keep using both because it comes out better.