Grate cheese if you are using a block or measure your cheese out.
Spread butter on one side of both pieces of bread.
Place the bread, butter side up, and pile the grated cheese on one slice.
Cover the cheese with the other slice of bread, butter side to the cheese.
Spread a thin layer of mayonnaise on the outside of one of the bread slices.
Place it into the preheated air fryer basket with the mayonnaise side facing down.
Spread a line layer of mayonnaise on the other side.
Cook for 5 minutes at 360 degrees F, flip over and continue cooking for 3 minutes or until golden brown and crispy.
Remove from the air fryer basket and serve immediately.
Enjoy!
Notes
Any air fryer will work great for this recipe. Just keep in mind that different air fryers might have different cooking times. You really just want to toast until golden brown.
If you're having trouble with your top slice of bread sliding, you can also secure it with a toothpick
To ensure even toasting, you can flip your grilled cheese halfway through cooking.
For best results, preheat the air fryer to cooking temp before putting in your sandwich.
You can also use cheese slices or shredded packaged cheese.