In a large bowl, combine the shredded mozzarella and grated Parmesan. Mix them well until evenly distributed.

Crack the egg into the cheese mixture, seasoning with salt and pepper. Stir everything together to create a cohesive blend.

Using your hands, scoop small portions of the mixture and shape them into bite-sized balls. Roll each ball in breadcrumbs until fully coated.

In a frying pan, heat oil over medium heat, enough to cover the bottom of the pan for even frying.

Carefully add a few bites at a time, ensuring not to crowd the pan. Fry until golden brown on all sides, typically about 2-3 minutes per side.

Once cooked, transfer them to a plate lined with paper towels to drain excess oil. Serve hot with your choice of dipping sauce.