Preheat the air fryer to 375 degrees for 5 minutes.
Trim the asparagus stalks to a length that fits in the air fryer basket. Toss with 1 tablespoon olive oil and salt and pepper to taste.
Spread in a single layer in the air fryer basket, using rack if needed, and cook for 5 - 10 minutes or until just cooked through and the edges start to brown. Remove the basket and toss asparagus once during cooking.