In food processor blend walnuts, dates and 4 TBPS of cacao powder.
In an 8x8 pan put layer of wax or parchment paper.
Take the nut, date mixture and press down evenly in the pan.
In a medium bowl mix the remaining 5 TBSP cacao powder, avocado, agave, vanilla and salt until blended. Best results with an electric mixture as you do not want chucks of avocado.
Spread the mixture on top of the nut/date layer.
Freeze for one hour to set, It should not become completely solid.
Enjoy! Store in the refrigerator covered.
Recipe Notes
You can also use the food processor to mix the cacao / avocado mixture (if you can't find your mixer like me), just ensure there are no chucks and it is smooth.