Add the ingredients for the cream cheese filling to a mixing bowl and stir well until combined. If you have an electric hand mixer or a stand mixer, either one will come in handy here.
Slice the tops off of the peppers and cut them in half lengthwise. Remove any seeds that are present.
Drizzle avocado oil over the peppers and use your hands to toss them together until everything is coated with a bit of oil.
Stuff the peppers with the cream cheese filling. Transfer 6 or so of them to the air fryer (in a single layer). Press the Bake setting (not the Air Fry setting) and adjust the temperature for 360 and set the time for 8 minutes.
Allow the peppers to bake then carefully remove them from the air fryer and transfer to a plate. Repeat for the remaining peppers.
Video
Notes
*Or use 1 clove of fresh garlic if you have it on hand.