To make air fryer stuffed mushrooms, first you need to prepare the mushrooms. First, you'll need a bag of thawed mushrooms that you can find at your local grocery store. You can also buy mushrooms from the frozen section of the store if you don't want to cook them yourself. Then you will need 2 tablespoons of olive oil, 1 tablespoon of butter, and 1 teaspoon of salt. Mix the ingredients together until they are well combined. Now you are ready to add the stuffing ingredients to the bagged mushrooms and toss them to coat them with the mixture. Finally, place the bags of mushrooms into the air-fryer basket and press down on the basket to flatten them out.