Deseed the Medjool dates and soak them in water for at least 3 hours or overnight for better results.
Briefly toast the skinless hazelnuts in a dry frying pan to enhance their flavor, or use pre-roasted hazelnuts.
Add the soaked dates, roasted hazelnuts, cocoa powder, and melted coconut oil to a chopper or food processor. Blend until smooth.
Add small amounts of water to achieve the desired spreadable consistency.
Transfer the spread into a clean, dry jar and store it in the refrigerator. Use within four days.