Heat oil in an overproof frypan over high heat. Add meatballs and sear until browned all over. Remove and set aside.
Add onion and cook for 3-4 minutes. Add Chicken Tonight Sauce and meatballs and bring to the boil. Simmer for 2-3 minutes before stirring through basil.
Remove from heat, sprinkle over cheese and place in a preheated oven at 200°C for 5-7 minutes or until cheese has melted and starting to brown. Remove from heat and serve immediately garnished with torn basil leaves.
Serve over cooked spaghetti for a substantial family meal.