01 - Set up three shallow bowls: place flour in the first bowl, whisk eggs with milk in the second bowl, and combine panko breadcrumbs, Parmesan cheese, oregano, garlic powder, salt, and black pepper in the third bowl.
02 - Pat mozzarella cubes dry with paper towels to remove excess moisture, ensuring better coating adherence.
03 - Dredge each mozzarella cube in flour, shaking off excess. Dip into egg mixture, then press firmly into breadcrumb mixture to coat thoroughly. For extra-crispy crust, repeat the egg and breadcrumb dipping steps.
04 - Arrange coated cheese balls on a baking tray and freeze for 15 minutes. This chilling step helps prevent cheese from melting too quickly during frying.
05 - Pour vegetable oil into a deep saucepan or fryer to reach 3-inch depth. Heat oil to 350°F, maintaining temperature throughout frying.
06 - Fry cheese balls in small batches for 1 to 2 minutes until golden brown and crispy. Remove using a slotted spoon and transfer to paper towels to drain excess oil.
07 - Serve immediately while hot and gooey with marinara sauce or your preferred dipping accompaniment.