Preheat oven to 375 degrees.
Combine flour, baking soda and salt in a small bowl and set aside.
Beat butter, shortening, granulated sugar, brown sugar and vanilla in a large bowl until creamy. Beat in eggs one at a time. Gradually stir in flour mixture. Stir in chocolate chips and nuts.
Drop by rounded tablespoons onto ungreased baking sheets.
Bake for 9 to 11 minutes until light golden brown. Don’t overbake if you want them to stay soft and chewy. Remove to wire racks to cool.