• Clean mushrooms using cold water and remove any loose dirt. Then, dry mushrooms with a damp paper towel or damp cloth, and remove the tops of mushrooms from the stems and set aside. 
• In a medium bowl, beat softened cream cheese with the crumbled bacon, shredded cheese, salt, pepper, and garlic. Stir together until the mixture is well combined and creamy.
• Use a spoon to scoop the cream cheese stuffing into mushroom caps, filling the mushroom cavity.
• Once all of the mushrooms are filled, lightly spray basket with cooking spray (olive oil spray) or brush the basket with oil, and then gently place the stuffed mushrooms into the air fryer basket in a single layer, without stacking or overlapping.
• Air Fry the mushrooms at 400 degrees Fahrenheit for 5-7 minutes, until the tops of the mushrooms are golden brown. 

Optional:

• Garnish with shredded parmesan cheese, chopped onions, or parsley flakes.