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Mashed potato fries in a bowl with ketchup on the table.

Mashed Potato French Fries

Charlotte Singh-Dhanraj
These Mashed Potato French Fries are a delectable treat. Everything you love about mashed potatoes paired with an ultra-crispy French fried coating! You will not be able to stop at one!
5 from 8 votes
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Prep Time 10 minutes
Cook Time 30 minutes
Freezing 15 minutes
Total Time 55 minutes
Course Side Dish
Cuisine American
Servings 4
Calories 216 kcal

Equipment

  • Vegetable Peeler
  • Knife
  • Cutting Board
  • dutch oven
  • Strainer
  • Potato Masher
  • large bowl
  • spoon
  • Offset spatula
  • Pizza Cutter

Ingredients
  

  • 3 medium russet potatoes washed peeled, cut, and boiled until fork tender
  • 1 teaspoon salt
  • ½ teaspoon black pepper
  • ½ teaspoon garlic powder
  • ½ cup shredded cheddar cheese
  • ¼ cup cornstarch
  • Oil for frying

Instructions
 

  • Begin by peeling potatoes and cutting them into uniform pieces.
  • Boil the potatoes until they are fork-tender, which should take about 15 minutes.
  • Once the potatoes are cooked, drain them and transfer them to a large bowl.
  • Use a potato masher to mash the potatoes until they are smooth.
  • Add salt, black pepper, garlic powder, cheddar cheese, and cornstarch to the bowl and mix with a wooden spoon until everything is well incorporated.
  • Spread a large sheet of waxed paper on a work surface and place the potato mixture on top.
  • Use an offset spatula to spread the mixture into a rectangle that is 8 x 10 inches and about ¾ to 1 inch thick.
  • Transfer the potato rectangle to the freezer for 30 minutes.
  • Once the potatoes have chilled, heat a Dutch oven with 1 inch of vegetable oil.
  • Using a pizza cutter or chef's knife, cut the potato rectangle into even French fries that are ¾ to 1 inch wide.
  • Once the oil has reached 325 degrees Fahrenheit, add 3-5 fries to the Dutch oven carefully. Cook the fries and rotate them with tongs if necessary until they are golden brown, which should take about 5-7 minutes per batch.
  • Transfer the cooked fries to a paper towel-lined plate and continue until all fries are cooked.
  • Enjoy the fries immediately with ketchup or aioli.

Notes

      • You can try using leftover mashed potatoes that you have on hand but you have to make sure the consistency is not too soft and you have to add the cornstarch to ensure a crispy exterior.
      • Make sure to cut the fries evenly so that they cook evenly.
      • DO NOT cut fries too thin they will be too delicate and break when frying! Alternately, you could place the mashed potatoes in a piping bag, pipe the fries on parchment paper, and freeze them until ready to fry.
      • Keep unfried fries in the freezer between batches.
      • Always be careful when frying and working with hot oil. Use a thermometer to check the oil temperature to ensure that the fries cook properly.
      • Don't overcrowd the Dutch oven when cooking the fries, as this will cause them to cook unevenly.

Nutrition

Calories: 216kcalCarbohydrates: 37gProtein: 7gFat: 5gSaturated Fat: 3gPolyunsaturated Fat: 0.2gMonounsaturated Fat: 1gCholesterol: 14mgSodium: 683mgPotassium: 685mgFiber: 2gSugar: 1gVitamin A: 144IUVitamin C: 9mgCalcium: 123mgIron: 1mg
Keyword mashed potato french fries
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