Add to a high speed blender or food processor cottage cheese, cocoa powder and maple syrup.
Blend on high for 30 seconds to 1 minute, until it reaches a smooth and creamy texture. If necessary, scrape down sides with the help of a spatula and then blend again.
Taste and adjust with more maple syrup, if necessary.
Using a spatula, scoop the cottage cheese mousse out of the blender and transfer it into a serving glass, bowl or airtight container.
Refrigerate at least 30 minutes before serving for the best texture, or enjoy immediately.