In a large bowl mix together the ground beef, egg, bread crumbs, parmesan cheese, minced garlic, chopped parsley, salt and pepper. Slowly add the milk until you have a soft compact mixture.Form the mixture into small balls.
FOR THE SAUCE
In a large pan add the olive oil, garlic, tomato puree/passata, salt, fresh basil, oregano and water. Mix to combine.
Add the meatballs and gently mix to cover them in sauce. Cover the pan and cook on low/medium (more low than medium) heat for approximately 15- 20 minutes, uncover and continue to cook for another 15-20 minutes or until cooked through and the sauce has thickened. If you find the sauce thickening too much then add a little more water.
Serve immediately as a main dish or over your favourite al dente pasta. Top with freshly grated parmesan cheese before serving. Enjoy!