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Sour Cream Mashed Potatoes

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These Sour Cream Mashed Potatoes are creamy, tangy and indulgent—with sour cream, butter and Parmigiano‑Reggiano elevating classic mashed spuds into a rich, velvet‑smooth side dish.

  • Total Time: 1 hour 5 minutes
  • Yield: About 9 cups (serves 8–10 people)

Ingredients

  • 5 pounds russet potatoes, scrubbed, peeled and cubed
  • 2 cups sour cream
  • 7 tablespoons salted butter
  • 1 cup grated Parmigiano‑Reggiano cheese
  • ¼ cup buttermilk
  • 2 teaspoons salt
  • ½ teaspoon freshly cracked black pepper
  • 3 tablespoons chopped chives

Instructions

  1. Peel and cut the potatoes into evenly‑sized chunks. Place in a large pot, cover with cold water and add about 1 Tbsp of coarse salt.
  2. Bring to a boil, then reduce heat and simmer until the potatoes are fork‑tender (about 15 minutes).
  3. Drain the potatoes and return them to the warm pot for a few minutes so excess moisture evaporates.
  4. Transfer the potatoes to a stand mixer bowl (or use a hand mixer) on low speed and mix until smooth.
  5. Add the butter, cheese, sour cream, buttermilk, salt and pepper. Mix on low then medium speed until the mash is fluffy and creamy. If it feels too thick, add a bit more sour cream or buttermilk.
  6. Stir in most of the chopped chives, reserving some to garnish. Scoop the mashed potatoes into a serving bowl and sprinkle the remaining chives on top.

Notes

  • For a lighter version, use low‑fat sour cream and cheese.
  • Leave the skins on the potatoes for a more rustic texture, though it won’t be quite as smooth.
  • Chopped scallions or green onions are a nice alternative or addition to chives.
  • Roasted smashed garlic folded in gives a deeper flavor twist.
  • Avoid freezing these mashed potatoes due to the sour cream—they can separate when thawed.
  • Author: Amelia
  • Prep Time: 45 minutes
  • Cook Time: 20 minutes
  • Category: Side Dish
  • Method: Boiling & Mashing
  • Cuisine: American
  • Diet: Vegetarian

Nutrition

  • Serving Size: 1 cup
  • Calories: 260
  • Sugar: 2g
  • Sodium: 400mg
  • Fat: 14g
  • Saturated Fat: 8g
  • Unsaturated Fat: 4g
  • Trans Fat: 0g
  • Carbohydrates: 24g
  • Fiber: 2g
  • Protein: 5g
  • Cholesterol: 35mg