French Onion Mashed Potatoes

Total Time Prep: 50 min. Cook: 25 min.
Yield 8 servings
Test Kitchen Approved
These French onion mashed potatoes combine caramelized onions and nutty Gruyere cheese with creamy mashed potatoes for one unforgettable side dish.

Ingredients

  • 2 tablespoons butter
  • 2 medium onions, chopped
  • 3/4 teaspoon salt
  • POTATOES:
  • 3 pounds medium potatoes, peeled and cubed
  • 2 teaspoons salt, divided
  • 1/2 cup butter, cubed
  • 1/2 cup sour cream
  • 1 teaspoon coarsely ground pepper
  • 1/2 cup whole milk, warmed
  • 2 cups shredded Gruyere cheese
  • 2 tablespoons minced chives, optional

Directions

  1. Heat butter in a large skillet over medium heat. Add onions; cook 5-6 minutes or until starting to lightly brown. Reduce heat to medium-low. Cook 35-45 minutes, stirring every 5 minutes, until onions are a deep brown color and very soft. Season with salt.
  2. Meanwhile, place potatoes in a stockpot; add water to cover. Season water with 1 teaspoon salt; bring to a boil. Reduce heat; cook, uncovered, until tender, 20-25 minutes. Drain and return to pan.
  3. Add butter, sour cream, remaining 1 teaspoon salt and pepper; beat until blended. Beat in milk. Stir in caramelized onion, Gruyere and chives. Garnish with additional chives and melted butter if desired.

Nutrition Facts

2/3 cup: 345 calories, 23g fat (14g saturated fat), 68mg cholesterol, 1051mg sodium, 28g carbohydrate (5g sugars, 2g fiber), 8g protein.

These decadent mashed potatoes are flavored richly with caramelized onions. They might take a little extra time to make, but the extra effort pays off in every mouthwatering spoonful. —Margaret Knoebel, Milwaukee, Wisconsin
Recipe Creator

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