Step 1

Remove insert from air fryer basket. Heat air fryer to 325°F.

Step 2

In large bowl, whisk together eggs, Worcestershire sauce, 3/4 tsp salt, and 1/2 tsp pepper; stir in panko and let sit 2 minutes. Stir in onion, garlic, and parsley. Add beef and mix until just incorporated.

Step 3

Shape beef mixture into three 5- by 3-in. loaves and place on air fryer insert. (Note: If using stainless steel air fryer insert, brush lightly with oil before adding meatloaves.) Return insert (with meatloaves) to basket and air-fry 10 minutes.

Step 4

Meanwhile, in small bowl, stir together ketchup and balsamic vinegar until combined. Transfer 2 tablespoons of mixture to second bowl and set aside. Brush tops and sides of loaves with remaining ketchup mixture, then continue to air-fry until internal temp registers 150°F, 13 to 16 minutes more. Brush with reserved ketchup mixture and let rest at least 5 minutes before slicing.