1. In a blender (or food processor), blend the bananas together with the ground cocoa, oil, and sweetener. When mixture is smooth, dump into a bowl with your oats, and nuts. Mix thoroughly.
2. Place in your dehydrator at 110 degree for 12 to 20 hours. About 6 to 8 hours in, go ahead and break up the granola, this not only helps in drying but helps in the final product. The time depends on your environment, so after 12 hours, start checking, if you think it needs more time then give it more time.
I personally prefer almonds, cashews, and pecans in this recipe, but the nuts are your choice. Optionally you could use seeds instead of nuts, sunflower or pumpkin are my personal favorites. Enjoy!
Source of recipe: My personal recipe, came up with it sometime in 2009, been making it ever since!