Prepare the air fryer basket by spraying it with cooking spray.
In a large mixing bowl, add sweet potato chunks, avocado oil, fresh rosemary, garlic powder, Parmesan cheese and salt and pepper. Toss to coat the sweet potatoes.
Add sweet potato cubes to the air fryer basket. Air fry for 12-15 minutes, shaking the basket every 5 minutes.
Once the sweet potato cubes are golden brown and easily pierced with a fork, they're done. Remove from the air fryer and serve warm.
Notes
Crispiness: You can spray the sweet potato cubes with extra oil in the last 5 minutes if they aren't crisping up. As much as I love air fryers, the cook time can really vary from model to model! For this reason, I recommend checking your food every few minutes. When the sweet potatoes start to turn golden brown, they're close to being done.Common modifications:
Spicy: To add a little heat, add 1/8 tsp or chili powder or cayenne pepper to the oil and spice mixture.
Sweet: To make a sweet version of this recipe, add 1 tablespoon or brown sugar or maple syrup to the oil and spice mixture.