Start by washing the butternut squash. Then, carefully cut it in half lengthwise. Use a spoon to scoop out and discard the seeds and any stringy flesh from the center.

Brush the cut sides of the squash halves with olive oil. Ensure a thin, even coating for the best roasting results. Sprinkle salt and freshly ground black pepper over the oiled surfaces. If desired, add a pinch of cinnamon, nutmeg, or a sprinkle of your chosen herbs for extra flavor.

Preheat your air fryer to 375°F (190°C) if your model requires preheating. This helps start the cooking process with consistent heat.

Place the squash halves in the air fryer basket, cut-side up. Depending on the size of your air fryer, you may need to cook one half at a time.

Cook for about 25-30 minutes, or until the squash is tender and the edges start to brown. The exact cooking time can vary based on the size of the squash and the specific air fryer model.

Test the squash for doneness by piercing it with a fork. It should be soft and easily penetrated by the fork tines.