Mix all meatball ingredients except the beef into a paste.
Add the beef and toss with a fork just until well mixed.
Form the beef into golf ball size and shape.
Preheat your air fryer to 375 F (190 C). Put the meatballs in a single layer, not touching. Cook in batches if necessary.
Cook for 8 minutes. Shake the basket and cook for 5 minutes more. Make sure the internal temperature of the meatballs is over 160 C (71 C)
You could also bake the meatballs on a tray in a 375 F (190 C) oven to an internal temperature of 160 F (71 C), 25 to 30 minutes.
While the meatballs are cooking, heat the oil over medium heat in a saucepan. Add the onion and garlic and cook until soft.
Add the remaining gravy ingredients and mix.
Add the cooked meatballs and cook over medium high heat until bubbles form, stirring.
Reduce heat to simmer and simmer for 5 minutes, stirring.