Preheat the air-fryer to 390°F (although you can also do these in the oven at 400 F, you’ll just have to cook them longer).
Combine Onions and Almond Milk (or other milk) in a medium bowl.
Let stand for 15 minutes.
Drain (discard Milk) and return to the bowl.
Sprinkle with Flour, Salt and Pepper and then toss to coat.
Transfer to the air-fryer pan and generously coat with cooking spray.
“Fry”, stirring once or twice, until tender and crisp, 5-7 minutes, or so.
Top your Healthified Green Bean Casserole and enjoy!