In a medium bowl, stir together the oats and cocoa powder. In a measuring cup, combine the coconut milk, vanilla extract, dates, and maple syrup. Pour the ingredients from the measuring cup over the oats, and stir to coat evenly. Taste the mixture to see if it needs more maple syrup, and adjust as needed.
Transfer the mixture to an airtight container and refrigerate overnight. I love these flip-top jars.
Serve warm, cold, or at room temperature. Garnish with fruit.
These chocolate overnight oats will keep for several days in the refrigerator.