Preheat the air fryer or oven to 300°F.
Cook the sweet potato for 1 hour (or 1 hour and 20 minutes for a large sweet potato).
After cooking, let the sweet potato sit inside the turned-off air fryer/oven for 3 hours.
Cover the sweet potato in olive oil and sprinkle with salt before cooking.
Once the 3 hours are up, pinch off the end of the sweet potato to create an opening.
Cut a chunk of cheese to fit inside the sweet potato.
Stuff the cheese into the sweet potato.
