Combine tigernuts, coconut chips, apple chips, mangos, and plantain chips in a medium sized bowl.
In a separate small bowl, combine coconut oil, maple syrup, slat, cinnamon, and vanilla. Add mixture to dry ingredients in the large bowl and stir until the sauce coats everything.
Pour mixture onto a parchment paper-lined baking sheet and distribute evenly.
Bake on the middle rack in the oven for about 35 minutes checking and stirring every 5-10 minutes to prevent burning.
Remove granola after 35 minutes. It should be browned/toasted but not completely dry. It will become more dry and crispy once it cools.
Notes
The dried mangos should be diced very very thin and small (about the size of grated cheese). If they are not small enough, the don't get crispy enough in the oven by the time the other ingredients are done.If you only have whole tigernuts on hand, just dice them into really small pieces. Whole one don't do very will in this granola because they end up bigger than the other ingredient pieces and they are kind of hard.