In a medium saucepan, combine sugar, milk, butter, and cocoa. Bring to a boil, and cook for 1 1/2 minutes. Remove from heat, and stir in peanut butter, oats, and vanilla. Drop by teaspoonfuls onto wax paper. Let cool until hardened.
These are really good! There's a girl at work who brings these to every potluck and they're always the first thing to run out - yum!
haha...I remember making them in Teen living when I was in the 6th grade and loved them. :)