Carefully slice each croissant in half lengthwise, but not all the way through.
Place 2 slices of cheese and tomatoes in the bottom of each croissant.
Close each croissant and place in the air fryer. Its best to space them apart to allow for the air to circulate.
Cook on 200℃ for 3mins, then carefully turn each one over and cook again for another 3mins.
Carefully remove from the air fryer and serve immediately.