Start by rinsing the whole button mushrooms under cold water to remove any dirt. Pat dry gently and trim the stems for even coating.

Prepare three bowls: one with all-purpose flour, another with beaten eggs, and the third with panko, parmesan, and ranch seasoning.

Coat each mushroom in flour, dip in beaten eggs, then roll in panko mixture, ensuring a thorough coat.

Place the coated mushrooms in a single layer in the air fryer basket. Lightly mist with cooking spray.

Set air fryer to 400°F and cook for 10-12 minutes, shaking basket halfway through for even cooking.

Remove from air fryer and optionally sprinkle with chopped parsley before serving.