Prepare the Mashed Potatoes: Start with cold mashed potatoes. If you have leftovers from a previous meal, this is the perfect way to use them. If not, simply mash fresh potatoes with a little water and season to taste.
Mix Ingredients: In a large bowl, combine the cold mashed potatoes, flour, egg, onion powder, salt, and pepper. Mix until all ingredients are well combined.
Heat the Oil: In a skillet, heat a generous amount of oil over medium heat. You want enough oil to cover the bottom of the pan, allowing the pancakes to fry up nice and crispy.
Form and Fry the Pancakes: Scoop about 1/4 cup of potato mixture and form it into a patty. Carefully place it in the hot oil. Repeat with more mixture, but don’t overcrowd the pan.
Cook Until Golden: Fry each pancake for about 3-4 minutes on each side until they're golden brown and crispy.
Drain: Once cooked, transfer the pancakes to a plate lined with paper towels to absorb excess oil.
Serve: Enjoy warm with your favorite toppings!