Ensure mashed potatoes are cool and creamy to prevent falling apart during frying.

In a mixing bowl, combine mashed potatoes, shredded cheese, flour, beaten egg, garlic powder, onion powder, salt, and pepper; mix thoroughly.

Form the mixture into about a tablespoon-sized ball, packing tightly.

Heat oil over medium-high heat in a deep frying pan or pot until a small drop sizzles.

Carefully fry the balls in hot oil, about 4-5 balls at a time, until golden brown, approximately 3-4 minutes per side.

Use a slotted spoon to remove and drain on paper towels.

Serve warm while cheese is still gooey.