Wrap each piece of cheese in a wonton wrapper, using the instructions and image above as a guide.
In a shallow pan (I use cake pans), whisk milk and egg together. In another shallow pan, spread 1 cup bread crumbs (you may need more).
Dip each mozzarella stick covered with a wonton wrapper in the milk/egg mixture, then cover with bread crumbs. Repeat the process until all mozzarella sticks are coated.
In a deep skillet or wok, heat around 3 inches of oil to 350 degrees Fahrenheit. I never temp the oil for something like this, I just make sure it's nice and hot before I start by sticking a wooden spoon in the oil. If bubbles start to form around the base of the spoon, I know the oil is ready.
Place a few mozzarella sticks in the oil at a time and cook for about 1 minute, or until they are brown and crispy. Only cook a few mozzarella sticks at a time. They cook quickly so keep a close eye on them!
Warm the marinara sauce, and serve immediately with mozzarella sticks. These are best enjoyed fresh!