Heat oven to 350 degrees F. In large bowl, stir brown sugar and butter until blended. Stir in vanilla and egg until light and fluffy. Stir in oats, flour, baking soda and salt; stir in chocolate chips and nuts.
Onto ungreased cookie sheet, drop dough by rounded tablespoonfuls about 2 inches apart.
Bake 9 to 11 minutes or until golden brown. Cool slightly; remove from cookie sheet to wire rack.