Place the cottage cheese, cocoa powder, and maple syrup into the jar of a high-speed blender or a food processor.
Process the mixture on high for about 1 to 2 minutes. Stop and scrape down the sides of the blender as needed to ensure every curd is fully incorporated and the mixture is glossy and smooth.
Spoon the chocolate mousse into small ramekins or glass jars. While you can eat it immediately, chilling it in the refrigerator for at least 30 minutes allows the texture to set and the flavors to deepen.