Set a large griddle or frying pan over medium heat.
To make working with potatoes simpler, if they are cold out of the refrigerator, I suggest warming them up a little and mashing them again, or beating them with an electric mixer.
Combine the mashed potatoes, eggs, flour, cheese, parsley, salt, and pepper in a big basin.
Mix the components thoroughly
Lightly grease the skillet or frying pan.
Shape the dough into patties, each containing about 1/4 cup of batter. Using your palms, flatten the patties.
Fry for three to five minutes on one side, then turn and continue to fry for another three minutes on the other side.