Cook the garlic bread according to the directions on the box.
Add the cooked meatballs and sauce to a pan over medium heat and bring that to a simmer.
Once simmering cover with a lid and lower the heat.
Remove the garlic bread from the oven when golden and press down the center with a spoon to form little bread bowls.
Place 2-3 meatballs in each piece of garlic bread and top with additional sauce from the pan.
Add a slice of Mozzarella cheese over the top of each of your meatball subs and place them back in the oven for a couple more minutes to melt the cheese.
Top with dried parsley to make it look fancy serve and enjoy!