Cheesy Meatball Skillet

In a large mixing bowl, combine all the ingredients for the meatballs and mix together with your hands.
Scoop out about 1 golf ball sized meatball mixture, roll it in your hands to make meatballs. (Can use a cookie or ice cream scoop.)
Add just enough oil to cover the bottom of the skillet and brown the meatballs 1/2 a batch at time over medium heat until evenly browned, about 5-8 minutes.
Remove meatballs and drain on paper towels. Drain any excess oil from the skillet.
Reduce heat to medium low and pour the marinara sauce in the skillet.
Add the meatballs back to the skillet and gently roll them around to coat them in the marinara sauce. Simmer for 5 minutes or until internal temperature of meatballs are 165 degrees F
Top with mozzarella cheese and some grated Parmesan cheese if desired. Cover and simmer until cheese melts or broil at 450 degrees F for 3-5 minutes for browned cheese.
Dish and serve hot sprinkled with grated Parmesan and chopped fresh basil if desired.