Preheat the oven to 350 degrees.
In a large bowl, combine the ground turkey, egg, panko breadcrumbs, milk, seasonings, Worcestershire sauce, and romano cheese.
Using your hands, mix until all the ingredients are distributed evenly. The meatball mixture is going to be wet. If it’s too mushy, then add 1-2 extra tablespoons of breadcrumbs.
Using a cookie scoop, measure out 15 meatballs onto a cookie sheet that is coated with cooking spray. It’s helpful to have a small bowl of water to dip your hands in while rolling the meatballs.
Cook the meatballs for 15-20 minutes or until just cooked.
While the meatballs are baking, get out a large saucepan, heat the sauce over medium heat until bubbling, and then reduce to a low simmer.
After the meatballs finish cooking, add them to the sauce and cook for 2-3 minutes. Turn on the broiler.
Add three meatballs to a hotdog roll, then pour a little more sauce over top of the meatballs. Prepare the rest of the subs. Sprinkle two tablespoons of mozzarella cheese on each of the subs and place under the broiler, and cook until the cheese melts.