Step 1: Prepare Your Baking Sheets - Line two baking sheets with parchment paper or set out 29 cupcake liners.

Step 2: Combine the Base Ingredients - In a medium saucepan, combine salted butter, granulated sugar, cocoa powder, and milk. Heat over medium heat, whisking frequently until it simmers.

Step 3: Boil the Mixture - Once it reaches a rolling boil, continue to boil for exactly one minute without stirring.

Step 4: Stir in Flavorful Additions - Remove from heat and stir in vanilla extract and creamy peanut butter, then add quick oats.

Step 5: Scoop and Shape the Cookies - Drop the mixture onto the prepared baking sheets or into cupcake liners.

Step 6: Allow to Cool and Set - Let the cookies cool at room temperature for about 20 to 30 minutes.

Step 7: Store for Later Enjoyment - Transfer to an airtight container and store at room temperature or in the fridge.