Cook the bacon in air fryer at 380 °F for 8 minutes or until it reaches the desired crispiness. It’s OK if bacon is touching, it will shrink as it cooks. Place a torn piece of bread in the pan, underneath the basket or tray to help absorb drippings and prevent smoking. Set aside.
Lay the slices of bread down. Spread some ranch dressing on both sides of the bread. Then, place a slice of cheese on each bread slice.
Slice the tomato. Place one slice of tomato for each sandwich.
Cut and slice the avocado into thin slices. Place a couple of slices of avocado for each sandwich.
Place a couple of pieces of bacon on each of the sandwiches.
Cover the bread to make a closed sandwich.
Next spread some butter on the outside of the sandwich. Then place the sandwich buttered side down in the air fryer basket, spread some more butter on the unbuttered side.
Cook in the air fryer at 400 °F for 4 minutes. Flip over with a silicone tong or spatula and cook for another 2-3 minutes, or until golden brown.