Prepare the Mushrooms: In a large mixing bowl, toss the cleaned baby bella mushrooms with melted butter, ensuring they are well-coated.
Mix Spices: In a small bowl, combine the minced garlic, onion powder, smoked paprika, salt, and black pepper. Sprinkle this mixture over the butter-coated mushrooms and toss again to ensure even distribution.
Preheat the Air Fryer: Preheat your air fryer to 375°F (190°C) for about 5 minutes. This helps the mushrooms cook evenly and develop that perfect golden-brown crust.
Air Fry the Mushrooms: Place the seasoned mushrooms in a single layer in the air fryer basket. Avoid overcrowding to allow for proper air circulation. Air fry for 8-10 minutes, shaking the basket halfway through, until they are tender and golden.
Add Parmesan Cheese: Once the mushrooms are cooked, sprinkle the grated Parmesan cheese over the mushrooms and air fry for an additional 2-3 minutes until the cheese is melted and bubbly.
Garnish and Serve: Carefully remove the mushrooms from the air fryer and transfer them to a serving dish. Garnish with freshly chopped parsley and serve with lemon wedges for a zesty finish. Enjoy your delicious, buttery garlic parm mushrooms!