Creating Mashed Potato Pancakes is an effortless process that anyone can follow. Here are the steps to prepare your delicious pancakes:

1. Preheat the Skillet: Heat a non-stick skillet over medium heat and add enough vegetable oil to cover the bottom.
2. Mix Ingredients: In a large bowl, combine the leftover mashed potatoes, chopped onion, eggs, flour, garlic powder, salt, and black pepper. Mix until just combined. If desired, fold in shredded cheese and fresh parsley.
3. Form Patties: Use your hands to shape the mixture into small patties, about 1/2 inch thick and 3 inches wide. Place on a plate.
4. Fry the Pancakes: Once the oil is hot, carefully place the patties in the skillet without overcrowding.
5. Cook Until Golden: Fry each side for approximately 3-4 minutes, or until golden and crispy. Adjust the heat as necessary to prevent burning.
6. Drain on Paper Towels: Remove the cooked pancakes from the skillet and place them on paper towels to drain excess oil.
7. Repeat: Continue the process until all the mixture is cooked.

Now you have beautiful, crispy Mashed Potato Pancakes ready to be served!