Preheat the oven to 325F. Place the almonds and walnuts in a food processor and pulse for just a few seconds until roughly chopped. Alternatively, roughly chop the nuts with a knife, or place them in a bag and crush the nuts with a rolling pin.
Line a large baking sheet with parchment paper.
Add all the ingredients, except the banana chips, to a large bowl. Stir well to coat the dry ingredients with the wet ingredients.
Pour the granola mixture onto a prepared baking sheet in an even layer.
Bake the granola for 25 minutes, stirring halfway through. I forgot to stir this granola one time, and the granola, once it cooled, ended up turning into granola clusters. So if you want granola clusters/chunks, this may be a good method to use. Just keep an eye on the granola to make sure it doesn't burn on the sides.
Let the granola cool completely.
Roughly chop the banana chips (in a food processor, or with a knife). Stir the chopped chips into the finished granola.
Notes
*If you don't like bananas, or can't find banana chips (dried banana slices), you can skip this ingredient. Alternatively, you could try adding raisins, dried cranberries, or another favorite dried fruit.