First, use a skillet and brown your sausage.
Then, mix the eggs, milk, salt, COOKED sausage, and shredded cheddar cheese in a large mixing bowl.
Spray your casserole dish with olive oil spray.
Then pour the egg/sausage mixture into the casserole dish.
Set the dish in the air fryer basket or tray.
Set the temperature to 300 degrees (AIR FRYER SETTING) for 12 minutes
After 5 minutes, check and see if your eggs are done. The Omni has a preheating setting, which is an additional few minutes. Sprinkle the extra cheese on it (optional) and close the air fryer, and wait for it to melt, about a minute.
Plate, serve and enjoy!