Preheat the oven to 275ºF and line a baking sheet (or 2, if they're smaller) with parchment paper.
In a large bowl, mix together the almonds, cashews, pumpkin seeds, sunflower seeds, coconut flakes, chia seeds, and hemp seeds.
In a separate bowl, whisk together the bananas, coconut sugar, coconut oil, almond butter, vanilla extract, cinnamon, and kosher salt.
Pour the wet ingredients over the dry and stir until all the dry ingredients are coated. Spread the granola mixture into an even layer on the prepared baking sheet(s).
Bake for 50 minutes to an hour, turning the pan every 20 minutes and mixing to ensure it doesn't burn.
Remove from the oven and press down slightly to help form clusters, and then let cool completely without disturbing to help the clumps form.
Store in a sealed container or bag at room temperature for about a month.