Step 1. Heat oven to 375°F. In small bowl, mix flour, baking soda and salt; set aside. Step 2. large bowl, beat softened butter and sugars with electric mixer on medium speed, or mix with spoon about 1 minute or until fluffy, scraping side of bowl occasionally. Step 3. in egg and vanilla until smooth. Stir in flour mixture just until blended (dough will be stiff). Stir in chocolate chips and nuts. Step 4. ungreased cookie sheets, drop dough by rounded tablespoonfuls 2 inches apart. Step 5. Bake 8 to 10 minutes or until light brown (centers will be soft). Cool 2 minutes; remove from cookie sheet to cooling rack. Cool completely, about 30 minutes. Store covered in airtight container. Grab a cup of tea and a warm cookie...then enjoy!