Use a food processor, put the graham crackers and pulse it until it shows some kind of crumble crackers.

Transfer the crumble crackers into a bowl and then pour the melted butter into it. Using a spatula mix both the melted butter with the crumble crackers until thoroughly combined.

Place a parchment paper into a cake pan, and then add the mixture into the pan and using your hand, press down the mixture firmly to make a tart crust and then store it in the fridge for about 30 minutes.

Meanwhile, make the filling for the tart.

In a double boiler, melt the chocolate and then mix it with sugar. Mix until both of them are thoroughly combined. Pour the mixture into a blender.

Cut an avocado and then put it in the blender. Blend the avocado with the chocolate mixture.

Take out the crust from the fridge, pour the chocolate avocado mixture into the now chilled tart crust and let it cool in the fridge until set.

Take out from the fridge and then dust the top of the chocolate tart with some cocoa powder and then put it in the fridge for a few minutes.

Serve and enjoy!