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

In a large mixing bowl, combine oats, peanut butter, honey or maple syrup, and cocoa powder. Mix until a cohesive dough forms.

Scoop tablespoon-sized portions and roll them into balls. Place dough balls onto the prepared baking sheet.

Gently press each dough ball down to form discs about ¼ inch thick.

Bake the cookies for 10–12 minutes, watching for the edges to firm up.

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