Spread the butter on one side of each bread. Place the cheddar and monterey jack cheeses in between the slices of bread, with the buttered sides facing outward.
Spread both sides of the outside of the sandwich with the butter. Place a toothpick in the middle of the sandwich to keep the two pieces together.
Cook the grilled cheese for 8 minutes, flipping it halfway through the cooking time. It's done when it's golden brown.
Notes
Butter all parts of the bread exposed to the heat or the bread can get too crispy.
Be mindful about the amount of cheese on the sandwich. If the grilled cheese is overflowing with cheese, the extra cheese will burn.
Use a toothpick to pin the bread slices and cheese together until the cheese starts to melt.
Try using a different cheese such as Swiss, mozzarella, or American cheese.
Try using sourdough bread, french bread, or even potato bread for a heartier sandwich.
Use mayo instead of butter. Mayo works as a fat and helps crisp up bread when air fried, just like butter.
Store any leftovers in an airtight container in the refrigerator for up to 2 days.
Reheat leftovers in a preheated air fryer at 320 degrees F for 3 to 4 minutes.
This nutrition information is based on the exact products I used in this recipe. Brands and sizes of products could alter exact nutrition and should always be calculated independently.