Meatballs I used are made by myself. Here is the link:
Preheat oven to 200 degree C.
Heat skillet on the stove. Add in some oil. Fry meatballs till they turn golden brown.
Pour in half bottler of pasta sauce ( around 170g) with 2 tsp water. Heat for a little while to let each meatball coated with condensed sauce.
Put skillet into oven. Bake for 15 mins.
Then sprinkle cheese shreds over it. And heat for another 5 mins or till all cheese melts.
Take skillet out. Sprinkle grate Parmesan and parsley.