Add the pretzel "flour" and coconut oil to a blender or food processor. Pulse several times until the mixture starts to stick.
Add the coconut sugar and half of the nondairy milk. Pulse repeatedly until the sugar is well-combined.
Test the mixture by pinching a bit of it between your fingers to see if it holds together. Add the rest of the nondairy milk if needed, a tablespoon at a time, until it does.
Transfer the mixture into a pie or tart dish. Use your fingers to press it down, and up the sides, in an even layer. Place the dish in the freezer for the crust to set, and wipe out the blender.
For the avocado chocolate fudge filling:
Add the avocado, sugar, pinch of salt, coffee, vanilla extract, and about half of the nondairy milk to the blender. Blend until smooth (or as smooth as you can get it, depending on the size of your blender).
Prepare a double boiler or other indirect heat element. I use a saucepan, with a couple of inches of simmering water, and a small nonstick skillet placed atop the saucepan.
Add the chopped chocolate and the rest of the nondairy milk to the double boiler. Stir frequently, until the chocolate is fully melted and combined with the nondairy milk.
Transfer the chocolate mixture to the blender and combine until the mixture is completely smooth. Taste for sweetness and add more sugar if desired.
Pour the mixture into the chilled pretzel crust and use a spatula to spread it into an even layer. Return the freezer to set.
Rinse or wash the blender right away so that it's not all chocolatey for making the caramel cream =].
For the date caramel cream layer (optional):
Drain the dates. Add all of the ingredients to the blender and combine until smooth.
Once the chocolate layer has set for at least 15 minutes in the freezer, gently spread the date caramel cream layer on top.
To eat, serve, and store the avocado chocolate fudge tart:
Let the entire tart set in the freezer for at least an hour, preferably longer.
Run a sharp knife under hot water, dry it, and use it for slicing.
If the tart has been in the freezer for more than a few hours, let it thaw at room temperature for about 15 minutes before slicing.
Notes
You want to use the 'cracker'-type pretzels, that are hard with no moisture, like Rold Gold twists. Please note that there is dispute over some minor animal-derived ingredients in Rold Gold and possibly other big name pretzel manufacturers. If this is a concern to you then you may want to do research about the brand of pretzels you are using. To make the pretzel flour, Add pretzels to the blender or food processor and pulse repeatedly until coarse crumbs are formed. It doesn't have to be a superfine powder, but it should be pretty small.To make this a refrigerator-stored tart with a more pudding-like texture, I recommend reducing the total nondairy milk in the avocado chocolate fudge layer to 1/2 cup. I also recommend using soy milk, which generally has a higher fat content. Or coconut milk if you enjoy coconut flavor. For the date caramel cream layer, reduce the nondairy milk to 1/4 cup, switch to soy milk if possible, and add a second tablespoon of coconut oil. I think the tart is best stored in the freezer though.Nutrition facts include all of the optional caramel cream. Calories, fat and sugar will be quite a bit lower without it.