Preheat your air fryer to 400°F (200°C) for about 5 minutes. This ensures the sausages cook evenly and achieve a good sear.

Lightly coat the sausages with olive oil or spray them with cooking spray. This helps to prevent sticking and promotes a crispy exterior.

If using, slice bell peppers and onions. Toss them with a little olive oil and season with salt, pepper, and any other desired seasonings. Spread them in a single layer in the air fryer basket.

Place the sausages in the air fryer basket. If you are cooking vegetables as well, ensure they are arranged around the sausages without overcrowding.

Cook the sausages at 400°F (200°C) for 10-12 minutes, flipping them halfway through the cooking time. This ensures they cook evenly and brown on all sides.

Check the internal temperature of the sausages with a meat thermometer. They should reach an internal temperature of 160°F (71°C).

Once cooked, remove the sausages from the air fryer and let them rest for a couple of minutes before serving. This allows the juices to redistribute, ensuring a juicy and flavorful sausage.