In a large mixing bowl, combine the ground beef and ground pork.
To the meat, add bread crumbs, egg, heavy cream, parmesan cheese, mozzarella, salt, parsley, and pepper.
Mix until well combined but avoid overmixing to ensure tender meatballs.
Roll the meat mixture into 1-2 inch balls.
Preheat your air fryer to 350 degrees F.
Spray the air fryer basket with cooking spray to prevent sticking.
Place meatballs in the air fryer basket in a single layer to allow even cooking.
Air fry meatballs for 10-12 minutes, turning them halfway through. For larger meatballs, you may need a couple of extra minutes.
Use a meat thermometer to ensure the internal temperature reaches 165 degrees F.
Serve these juicy air fryer meatballs with your favorite pasta sauce, in a meatball sub, or with a side of marinara sauce for dipping.