Preheat air fryer to 370 degrees.

Assemble: Butter the outsides of the bread slices and assemble sandwiches with cheese in the center. Use a toothpick to secure the sandwich together (if your bread is thin, the top piece will blow off during cooking).

Air Fry at 370 degrees for 5-6 minutes, flipping once during cooking. Total cook time will depend on the type of bread. Check on it periodically and continue cooking until it reaches your desired level of toasted. Remove toothpick before eating.