01 -
Fill a 5-quart pot with water and add 1 tablespoon salt. Add the peeled and quartered russet potatoes. Bring to a boil and cook until potatoes are easily pierced with a fork. Drain thoroughly and mash with 4 tablespoons butter. Cool to room temperature before using in the recipe. These can be made 1-3 days ahead of time.
02 -
In a large mixing bowl, combine the mashed potatoes, shredded mozzarella, egg, flour, and chopped chives. Use a potato masher to mix everything together until well combined. If the mixture seems too loose to form patties, add more flour one tablespoon at a time.
03 -
Take a heaping tablespoon of the potato mixture and form it into a round patty about 1/3-inch thick between your palms. Dredge both sides in bread crumbs, coating evenly, and set aside on a cutting board. Repeat with the remaining mixture.
04 -
Heat a large non-stick pan over medium heat with enough oil to lightly cover the bottom. Once hot, add the patties in a single layer (don't overcrowd the pan). Cook for 3-4 minutes per side until golden brown and crispy. For faster cooking, use two skillets simultaneously.
05 -
Transfer the cooked pancakes to a paper towel-lined plate to absorb excess oil. Serve warm with a dollop of sour cream on top or on the side.