Soak the dates in boiling water for at least 20 minutes.
Add the oats, chia seeds, cocoa powder, dates, date water (plus any additional water to make up the rest), vanilla, and salt to a high-powered blender.
Blend on high for about 1 minute, or until mostly smooth. The mixture will be thin—this is expected.
Divide the blended oats evenly between 4 small jars or containers.
Melt the chocolate, then spoon over the top of each jar.
Seal and refrigerate for at least 1½ hours, or overnight, until the oats are thick and the chocolate topping is firm.
Store in the fridge for up to 5 days. Enjoy straight from the jar!
