1. Heat oven to 375*F. In large bowl, combine sugars, butter and shortening; beat until light and fluffy. Add vanilla and egg; blend well.
2. Add flour, baking soda and salt; mix well. Stir in chocolates and nuts. Drop by tablespoonfuls 2 inches apart onto ungreased cookie sheets.
3. Bake 9 to 12 minutes or until light golden brown. Cool 1 minute; remove from cookie sheets.
3 dozen cookies