Preheat your air fryer to 350°F (175°C) for about 5 minutes.

Set up a breading station with four shallow dishes: one for milk, one for flour and seasoning, one for ranch dressing, and one for panko and dry ranch mix.

Dip each mushroom cap first in milk, then in the flour mixture, then in ranch dressing, and finally in the panko mixture.

Place the breaded mushrooms in the air fryer in a single layer and lightly spray the tops with nonstick cooking spray.

Air fry the mushrooms at 350°F (175°C) for about 7 minutes until golden brown and crispy.

Carefully remove from the air fryer and let cool for a minute before serving with your favorite dipping sauces.