I’ve been making our granola for 30 years. I put various nuts dried fruits ( after it’s all baked) , dried unsweetened coconut flakes and cinnamon , I’ve used local sourwood honey or org maple syrup with olive oil. Yummy! For years we gave it at Christmas instead of cookies. ( to the granola lovers of course- did not want to waste it on those who might toss in the trash) lol
I would recommend using coconut sugar in place of the brown sugar so you keep the same consistency! You can use honey in place of the maple syrup, though! :)