Mashed Sweet Potatoes with Caramelized Onions

Cutting the potatoes into small cubes before boiling prevents them from becoming waterlogged and results in a fluffier mashed potato side dish.

Mashed Sweet Potatoes with Caramelized Onions Enlarge Image
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9 users rated this recipe an average rating of 3.5
Makes:
8 servings
Prep:
30 mins
Cook:
30 mins
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Mashed Sweet Potatoes with Caramelized Onions

Ingredients
1/2
cup unsalted butter or butter
2
pounds yellow onions, peeled, halved, and thinly sliced (7 cups)
1/2
teaspoon salt
1/2
teaspoon freshly ground black pepper
4
pounds sweet potatoes or white potatoes, peeled and cut into 1/2-inch cubes (about 10 cups)
1/2
cup milk
1/3
cup dairy sour cream
 
Salt and ground black pepper

Directions

  1. To caramelize the onions, in a large skillet heat 1/4 cup of the butter. Add the onions and cook, stirring frequently, about 30 minutes or until golden brown. Season with the 1/2 teaspoon salt and pepper. Remove from the heat; set aside.
  2. Meanwhile, cook the potatoes in a large pot, covered, in lightly salted boiling water for 12 minutes or until tender; drain.
  3. Add the remaining 1/4 cup butter to the hot pot and let melt. Add the potatoes to the pot and mash with a potato masher until smooth. Stir in the milk, sour cream, and salt and pepper to taste. Stir in caramelized onions, reserving a few onions for garnish. Cook and stir over low heat until heated through. Transfer to a serving dish. Top with reserved onions. Makes 8 to 10 servings.

From the Test Kitchen

Prepare potatoes through step 3 stirring in the caramelized onions, but do not heat through. Transfer to a 2-1/2- to 3-quart casserole. Cover and chill in the refrigerator up to 24 hours or until ready to serve. Before serving, bake potato-onion mixture in a 325 degree F oven for 55 to 60 minutes or until heated through.

Nutrition Facts

(Mashed Sweet Potatoes with Caramelized Onions)
    Per serving:
  • 299 kcal cal.,
  • 14 g fat
  • (9 g sat. fat,
  • 1 g polyunsaturated fat,
  • 4 g monounsatured fat),
  • 37 mg chol.,
  • 182 mg sodium,
  • 40 g carb.,
  • 6 g fiber,
  • 12 g sugar,
  • 4 g pro.
  • Percent Daily Values are based on a 2,000 calorie diet
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