add sugar, butter, milk and vanilla to a medium saucepan. bring to a boil, and boil for 1 1/2 minutes exactly-stirring constantly.
remove from heat, add oats and peanut butter. stir until mixture begins to thicken.
Drop by teaspoons full onto wax paper and allow to set up. enjoy! (I like to keep these on a plate in the fridge with wax paper between the layers and a covering of saran wrap. Somehow they are super good cold!!