Add 2-3 inches of oil to a deep-frying pan or pot and heat it over medium heat or until it reaches 265 degrees Fahrenheit.
In the meantime, add the flour to a shallow bowl then add the salt and pepper and stir to combine.
In another shallow bowl, whisk the eggs and water together.
Finally, in a separate shallow bowl, add the breadcrumbs.
Dredge the cheese sticks one at a time in the flour then dip them in the egg mixture then coat them in the breadcrumbs and set them on a plate or cooling rack.
Once the oil is ready, fry each of the cheese sticks in the oil for 2-3 minutes or until light and golden. Only add 3-4 cheese sticks at a time to not overcrowd the pan.
Let them cool on a cooling rack or a plate fitted with a paper towel then serve with marinara sauce.
Notes
These cheese sticks can be stored in an airtight container in the fridge for up to 3 days.Reheat them in a 375-degree oven for 5 minutes or until crispy.