1Heat oven to 350°F. In large bowl, beat butter, brown sugar, granulated sugar, vanilla and egg with electric mixer on medium speed until light and fluffy, or mix with spoon. Stir in flour, baking soda and salt (dough will be stiff). Stir in white chocolate chunks and nuts, using hands if necessary.
2Shape dough into 1 1/2-inch balls. Place balls on ungreased cookie sheets, about 2 inches apart (do not flatten).
3Bake 11 to 13 minutes or until light brown. Cool 1 to 2 minutes; remove from cookie sheet to cooling rack. Cool completely; store tightly covered.