Recipes and Cooking Mashed Sweet Potatoes with Caramelized Onions 4.3 (6) Add your rating & review Cutting the potatoes into small cubes before boiling prevents them from becoming waterlogged and results in a fluffier mashed potato side dish. By BHG Test Kitchen BHG Test Kitchen The Better Homes & Gardens Test Kitchen has been in continuous operation for nearly 100 years, developing and testing practical, reliable recipes that readers can enjoy at home. The Test Kitchen team includes culinary specialists, food stylists, registered and licensed nutritionists, and other experts with Bachelor of Science degrees in food science, food and nutrition, or culinary arts. Together, the team tests more than 2,500 recipes, produces more than 2,500 food images, and creates more than 1,000 food videos each year in the state-of-the-art test kitchen. Learn about BHG's Editorial Process Published on October 1, 2004 Print Rate It Share Share Tweet Pin Email Prep Time: 30 mins Cook Time: 30 mins Total Time: 1 hrs Servings: 8 Jump to Nutrition Facts Ingredients ½ cup unsalted butter or butter 2 pound yellow onions, peeled, halved, and thinly sliced (7 cups) ½ teaspoon salt ½ teaspoon freshly ground black pepper 4 pound sweet potatoes or white potatoes, peeled and cut into 1/2-inch cubes (about 10 cups) ½ cup milk ⅓ cup dairy sour cream Salt and ground black pepper Directions 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. Meanwhile, cook the potatoes in a large pot, covered, in lightly salted boiling water for 12 minutes or until tender; drain. 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. Tips 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. Rate it Print Nutrition Facts (per serving) 299 Calories 14g Fat 40g Carbs 4g Protein Show Full Nutrition Label Hide Full Nutrition Label Nutrition Facts Servings Per Recipe 8 Calories 299 % Daily Value * Total Fat 14g 18% Saturated Fat 9g 45% Cholesterol 37mg 12% Sodium 182mg 8% Total Carbohydrate 40g 15% Total Sugars 12g Protein 4g Vitamin C 33.1mg 166% Calcium 101mg 8% Iron 1.3mg 7% Potassium 680mg 14% Folate, total 36.3mcg Vitamin B-12 0.1mcg Vitamin B-6 0.5mg *The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.