Heat oven to 350°F. In large bowl, combine brownie mix with nuts, butter and egg; stir with spoon until well blended. Add cereal, chocolate chips and oats; mix well. Drop dough by rounded teaspoonfuls 2 inches apart onto ungreased cookie sheets.
Bake at 350°F. for 9 to 12 minutes or until edges are set. (Centers will be soft.) Cool 1 minute; remove from cookie sheets. Cool 10 minutes or until completely cooled. Store in tightly covered container.