In a heavy bottomed saucepan, add the butter, sugar, milk and cocoa powder. Bring to a rapid boil and stir constantly for 1 minute. Remove from heat.

Immediately add the peanut butter and vanilla. Stir until fully combined and smooth. Add the oats and stir to fully incorporate.

Scoop by large tablespoons and place on a parchment paper lined cookie sheet. Allow to cool and set. (Around 30 minutes)

Store cookies in the refrigerator and enjoy!