Preheat your air fryer to 350°F |176°C.
In a large mixing bowl combine all the meatloaf ingredients: ground beef, onion soup mix, breadcrumbs, milk, Parmesan cheese, parsley, garlic, egg, Italian seasoning, salt and pepper.
Divide the mixture into 2 equal portions and shape into two meatloaves, about 5-inch long and 2 inch wide. Place them in the air fryer and brush with oil.
Air fry at 350°F |176°C for 20 minutes. If the loaves are getting too brown, place foil over the tops.
Meanwhile, prepare the glaze. In a small bowl, mix together ketchup and brown sugar.
After 20 minutes of cooking, add the topping and continue air frying at 350°F |176°C for 9-10 minutes. Check for doneness, using an instant read thermometer. If the internal temperature does not reach 160°F| 71°C, continue to cook at 5-minute intervals.
Allow to rest in the basket for 5-10 minutes before slicing and serving.