Gather the ingredients.
Line rimmed baking sheets with parchment paper and set aside.
In a medium saucepan, combine the peanut butter and honey over medium heat until melted and combined. Alternately, these ingredients can be combined in a large microwave-safe bowl and heated in 30 second increments, stirring each time, until melted and combined.
Remove from the heat or from the microwave, and add the rolled oats and cocoa powder. Stir until combined.
Lightly wet your hands (the dough will be sticky) to form 24 cookies and place on the prepared baking sheet. Flatten slightly to resemble a round cookie. Place in the refrigerator for at least one hour to harden and set. Enjoy straight from the refrigerator.
