Preheat air fryer to 300°F (150°C).
In a large mixing bowl, whisk together honey, melted coconut oil, cinnamon, salt, and vanilla extract until emulsified.
Add rolled oats and sliced almonds to the bowl and fold until the dry ingredients are thoroughly and evenly coated.
Line the air fryer basket with a piece of parchment paper, ensuring it is slightly smaller than the basket floor to maintain adequate airflow.
Spread the oat mixture in an even layer over the parchment paper.
Air fry for 10 to 12 minutes, pausing to stir the mixture every 4 minutes to ensure uniform toasting and prevent localized burning.
Remove the basket and allow the granola to cool completely inside the basket for at least 20 minutes to allow the clusters to harden before storage.