Mix together the beef mince and salt and pepper. You can add a beaten egg but I never do, and this still works very well!

Divide into four equal sized portions.

Roll into a ball.

Press down in the middle and push around the edges to shape into a burger.

Place the burgers into the air fryer basket in a single layer.

Air fry at 200C (395F) for 6-7 minutes.

Flip over and air fry at 200C (395F) for a further 6-7 minutes.

As soon as cooked add a slice of cheese to each burger and it'll begin to melt beautifully from the residual heat.

The cooking time WILL depend on the thickness of your burger, so if you're using burgers thinner than ¼lb, or even thicker ones, then you will need to adjust your cooking time accordingly.