Prepare the Mushrooms: Clean the mushrooms, then remove the stems by gently pulling them out. Use a spoon to carefully scoop out a bit more of the mushroom flesh to make room for the filling. Set the caps aside.
Make the Crab Filling: In a mixing bowl, combine the chopped imitation crab, cream cheese, shredded sharp cheddar, Pecorino Romano, dried basil, granulated onion, granulated garlic, smoked paprika, and sea salt. Use your hands or a spoon to mix until well combined.
Fill the Mushrooms: Spoon the crab mixture into each mushroom cap, filling them just to the top. Press down gently to pack the filling without overstuffing.
Prepare the Panko Topping: In a small bowl, combine the panko breadcrumbs with the melted butter, stirring until the crumbs are evenly coated. Top each stuffed mushroom with a spoonful of the breadcrumb mixture, pressing gently to help it adhere.
Air Fry the Mushrooms: Load your Ninja Woodfire with Pellets and set your it to the Air Crisp Setting, make sure to press the woodfire button. Set the temperature to 375°F (190°C). Spray the air fryer basket lightly with olive oil, then arrange the stuffed mushrooms in a single layer. Spray the tops of the mushrooms lightly with olive oil to help with browning.
Cook: Air fry the mushrooms at 400°F (204°C) for 10-15 minutes, or until the filling is bubbly, the breadcrumbs are golden brown, and the mushrooms are warmed through.
Serve: Serve these mushrooms hot as an appetizer or party snack! Add a little extra melted butter on top if you want them extra rich and tasty!