In a medium saucepan, combine butter,
sugar, cocoa and milk.
Stirring constantly, bring to a boil.
Boil without stiffing for 1 1/2 min.
Remove from heat;
stir in vanilla, oats and peanut butter.
Stir until peanut butter is melted.
Drop by tablespoonful onto wax paper.
Chill until firm. Makes 24-36.