Preheat your oven to 300 degrees, and line a baking sheet with parchment paper or a silicone baking mat (or use some nonstick cooking spray).
In a large bowl, whisk together the oats, flour, chia seeds, salt, and cinnamon.
In a separate bowl, whisk together the melted coconut oil, maple syrup, and vanilla extract.
Pour the coconut oil mixture all over the oat mixture, and stir until oats are evenly coated.
Spread the granola onto the prepared sheet pan in an even layer. The layer will be pretty thick, so don't worry that oats are toppling all over each other -- this is how we get those delicious clusters!
Bake the granola for 30 minutes. Add the coconut flakes halfway through baking time by sprinkling them evenly over the granola and lightly stirring them in. Return the coconut granola to the sheet pan for the rest of the baking time.
After 30 minutes, when the coconut flakes are lightly toasted and browned, remove the granola from the oven and let it cool completely on the sheet pan before moving it. Allowing it to cool on the sheet pan will help those large granola clusters bind together, and you can break them into smaller clusters if desired.
