Peel the butternut squash and remove the seeds completely.
Cut squash into uniform 1-inch cubes for even cooking.
Place cubes in a large bowl.
Add oil, maple syrup, crushed garlic, chopped herbs, salt, and pepper; toss to coat evenly.
Preheat air fryer to 400°F for 3 minutes.
Line basket with a parchment paper liner if available.
Arrange cubes in a single layer without stacking.
Air fry for 12 minutes total at 400°F.
Shake the basket at the 6-minute mark for even browning.
Cook until edges are golden brown and centers are tender; remove and serve immediately or cool for storage.