Steps
1. Cut the avocado in half, remove the pit, and scoop the flesh into a blender.
2. Add the banana, cocoa powder, almond milk, vanilla extract, and salt.
3. Blend until smooth and creamy, scraping down the sides as needed.
4. Taste the mixture and add sweetener if desired, then blend again.
5. Transfer the mixture into a serving bowl or dish.
6. Chill in the refrigerator for about 15 minutes before serving to enhance the flavors.