Arrange your ingredients: cut the mozzarella into sticks, set up three shallow dishes with flour, beaten eggs, and toasted panko breadcrumbs seasoned with salt, pepper, and optional spices.
Dredge each mozzarella stick in the flour, tapping off any excess, then dip into the egg mixture, ensuring it’s fully coated.
Next, roll the coated stick in the toasted panko breadcrumbs, pressing gently to help the crumbs stick well. Place coated sticks on a tray and chill for about 15 minutes to firm up.
While the cheese chills, heat your oil in a deep pan to 180°C (350°F), monitoring with a thermometer for accuracy.
Carefully lower a few mozzarella sticks into the hot oil, avoiding overcrowding, and fry for 2-3 minutes until golden brown and crispy, turning occasionally.
Use a slotted spoon to lift out the fried sticks, draining excess oil on paper towels, and let them rest for a minute to settle and finish melting.
Serve the hot, crispy mozzarella sticks immediately with marinara or your favorite dipping sauce, allowing the cheese to stretch and ooze with every bite.