Combine the melted coconut oil, agave, vanilla, cocoa powder and salt in a medium sized bowl. Fold in the warm, popped quinoa. Spoon the mixture onto the lined baking tray to form balls, and flatten them by pressing them down with the back of the spoon. The mixture may be difficult to scoop if it's too cool. If this happens, pop it in the microwave to warm up.
Immediately refrigerate your cookies until they cool, about an hour. Store the cookies in the fridge in an air tight container for up to a week.