Preheat your oven to 350°F (175°C) and prepare a baking sheet lined with parchment paper.

In a large mixing bowl, combine rolled oats and cocoa powder until evenly distributed.

Add peanut butter and sweetener into the dry ingredients and mix until a cohesive dough forms.

Scoop portions of dough onto the prepared baking sheet, spacing them about 2 inches apart and flatten each scoop slightly.

Bake for 12-15 minutes until the edges feel firm and the tops have set.

Let the cookies cool on the baking sheet for 5 minutes before transferring them to a wire rack.