Prepare cheesy stuffed mushrooms as a tasty appetizer using your Ninja Air Fryer. Remove the stems from large mushrooms and fill the caps with a mixture of cream cheese, grated cheddar, minced garlic, and chopped herbs. Place the stuffed mushrooms in the air fryer basket and cook at 375°F for 8-10 minutes. The result is gooey, cheesy mushrooms with a crispy top.