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

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

Dip each portobello mushroom cap into milk, then into the flour mixture, shaking off excess flour.

Coat the floured mushroom in ranch dressing, ensuring it’s completely covered.

Roll the ranch-dipped mushroom in the panko mixture, making sure it is thoroughly coated.

Place the breaded mushrooms in a single layer in the air fryer basket, spraying tops with nonstick cooking spray.

Air fry for about 7 minutes until golden-brown and crispy.

Remove and let cool for a moment before serving warm with dipping sauces.