If you want to make your hot cocoa even richer, add a dollop of whipped coconut cream before serving. Or whipped heavy cream if you tolerate dairy.
Replace the water with full-fat milk for a richer taste. But keep in mind that the carb count will go up about 11 grams per cup.
If you want something extra, add a few chocolate shavings or a sprinkle of cinnamon on top!