Place the sausage in the air fryer basket in a single layer, leaving space between the sausages for the air to circulate so they cook evenly.
Air fry the sausages for 8 to 12 minutes, turning them over once halfway through the cooking process, until browned and cooked through. Serve with spicy mustard or another dipping sauce, or use in a recipe.
Notes
Use an instant-read thermometer to check that the sausage is fully cooked. The internal temperature should be at least 160 degrees when inserted into the very middle of the sausages.