Preheat the air fryer to 400ºF for at least 3 minutes, or according to the manufacturer’s instructions.
If using a basket-style air fryer, add the water to the bottom of the basket, then add the crisping tray. Line with parchment or an air fryer liner for the best results.
Place the sausage links or patties on the tray, spaced ½" or more apart in a single layer.
Cook for 7-9 minutes, with links taking less time and patties taking a little more time.
Shake the basket halfway through cooking or flip the sausages to ensure even browning.
The sausage is done once it has reached an internal temperature of 165ºF (145ºF is considered safe, but breakfast sausages taste better when they are a little more well done).
Remove from the air fryer using tongs and drain on a paper towel-lined plate if desired.
Allow them to cool for 3 minutes before serving.
Notes
From frozen: You can cook both breakfast sausage links and patties from frozen in the air fryer. This works exceptionally well if they are pre-cooked, but frozen raw breakfast sausages can be cooked as well. For frozen breakfast sausages, add a few extra minutes - increasing the cooking time to 10-14 minutes. Be sure to check for a minimum internal temperature of 145-165ºF. For precooked frozen sausages, you'll need just 3-4 minutes to reheat.