Combine the tahini, cocoa powder, maple syrup, vanilla extract, and salt in a mixing bowl. Stir all the ingredients together.
Gradually incorporate water into the mixture while stirring until it reaches a smooth and creamy texture.
Transfer the chocolate tahini spread to a clean jar or airtight container.
Store the spread in the refrigerator to allow it to firm up slightly and develop its flavors. It will thicken as it cools.
When you're ready to enjoy, take it out of the fridge and let it sit at room temperature for a few minutes to soften slightly. Then, use it as a dip, spread, or filling as desired.