Making Mashed Potato Cheese Puffs is straightforward. Follow these steps for delicious results:

1. Prepare the Mashed Potatoes: If using leftover mashed potatoes, make sure they are at room temperature. If making fresh, peel and boil potatoes until tender. Mash them well and let cool slightly.
2. Mix Ingredients: In a large bowl, combine the mashed potatoes, shredded cheese, flour, egg, garlic powder, onion powder, salt, and pepper. Mix until well combined. The mixture should be thick enough to hold its shape.
3. Shape the Puffs: Using your hands or a spoon, form small balls or patties from the mixture, about the size of a golf ball.
4. Heat the Oil: In a deep frying pan or pot, heat about 2 inches of oil over medium heat. You can test if the oil is ready by dropping a small piece of the mixture in; it should sizzle.
5. Fry the Puffs: Carefully place the shaped puffs in the hot oil, being careful not to overcrowd the pan. Fry for about 3-4 minutes per side, or until they are golden brown and crispy.
6. Drain Excess Oil: Use a slotted spoon to remove the puffs from the oil, placing them on a paper towel-lined plate to absorb any excess oil.
7. Serve Warm: Enjoy your Mashed Potato Cheese Puffs while hot for the best flavor and texture.