To serve, place sausages in buns and top with peppers, onions and Parmesan cheese. Broil in the oven for a few minutes to melt cheese and toast the buns. Alternatively, you can place the prepared sausage rolls back into the air fryer for 1-3 minutes or until the cheese is melted and buns are toasted.
As with any air fryer recipe, times may vary depending on model. You may need to adjust the cooking time up or down a few minutes.
Instead of Parmesan, you can use Mozzarella or your favorite melty cheese.