Scoop the cold risotto into 14-16 equal pieces, slightly larger than a walnut. You can make smaller or larger balls, depending on your preferences.
Use slightly wet hands to roll the risotto into balls. Flatten a risotto ball in your hand and put a piece of mozzarella cube in the center. Avoid making it too thin or the mozzarella will oose out!
Close the rice around the mozzarella and roll it into a tight ball. Set the risotto ball aside on a plate and repeat until all the risotto is used.
Set up three bowls: one with flour mixed with half of the seasoning, another with beaten eggs and the remaining seasoning, and a third with breadcrumbs.
Roll each ball in flour, then dip into the egg mixture, and finally coat with breadcrumbs. Transfer them to a tray and set them aside.
Set the air fryer to 356°F (180°C). Line your air fryer basket with parchment paper.
Lightly brush the tops with oil for extra crispiness and place them in your air fryer basket.
Cook for 8 minutes, set the temperature to 375°F (190°C), and cook for another 7-8 minutes, until golden brown.