Begin by measuring the oats in a large mixing bowl and setting them aside.

Over low heat in a medium-sized saucepan, melt the unsalted butter.

Incorporate the granulated sugar, whole milk, and cocoa powder into the melted butter, ensuring a thorough mix. Bring the mixture to a gentle boil and allow it to simmer for approximately 2 minutes, stirring constantly.

Remove the saucepan from the heat source and promptly introduce the peanut butter and vanilla extract. Stir until the peanut butter completely melts, resulting in a smooth mixture.

Transfer the chocolate peanut butter mixture to the oats in the mixing bowl, making sure to coat the oats evenly.

Use a spoon to drop spoonful’s of the mixture onto parchment paper or a baking sheet, forming cookies. Allow them to cool and set for roughly 30 minutes.