Start by rinsing the broccolini under cool water. Trim the bottoms of the stems to ensure they cook evenly. Pat them dry with a clean kitchen towel or paper towel to remove excess moisture, which will help achieve that crispy texture.
In a mixing bowl, combine the broccolini with the avocado oil, nutritional yeast, garlic powder, sea salt, and freshly ground black pepper. Toss everything together until the broccolini is well coated.
Preheat your air fryer to 400°F (200°C) for about 5 minutes. Preheating is essential for achieving that crispy exterior.
Once preheated, arrange the seasoned broccolini in a single layer in the air fryer basket. Avoid overcrowding to ensure even cooking. Air fry for about 8-10 minutes, shaking the basket halfway through to promote even crispiness.
After 8 minutes, check the broccolini. It should be tender and crispy. You can air fry it for an additional minute or two if you prefer it extra crispy.
Carefully remove the broccolini from the air fryer and serve immediately. Enjoy it as a side dish or toss it into salads or grain bowls for added nutrition and crunch!