Preheat your air fryer to 370°F (188°C) for 3–4 minutes. A hot basket helps crisp the bread faster.

Spread the bread: Lightly coat one side of each slice with butter or mayo. Make sure you reach the edges for even browning.

Assemble the sandwiches: Place one slice of cheese between two slices of bread, buttered sides facing out. For extra gooeyness, use two slices of cheese per sandwich.

Secure if needed: If your bread is puffy or the cheese wants to slide, press gently or add a toothpick through the corner to keep it together. Remove the toothpick before serving.

Air fry the first side for 4 minutes at 370°F. Place the sandwiches in a single layer in the basket. Don’t overcrowd; cook in batches if necessary.

Flip carefully and air fry for another 3–4 minutes, until the bread is golden and the cheese is fully melted. If the tops are browning too quickly, lower the temp to 350°F and add 1 minute.

Rest for 1–2 minutes before slicing. This helps the cheese set slightly so it doesn’t ooze out.

Serve warm with fruit, carrot sticks, or a small cup of tomato soup for dipping.