Caramelized Onion and Horseradish Smashed Potatoes

4.4
(98)

Caramelized onions give this incredible side dish a subtle sweetness, and the addition of horseradish gives it a little attitude! They make an absolutely fabulous side dish to prime rib, and have become a tradition every year at family holiday gatherings! To save time, the caramelized onions can be made ahead of time and refrigerated, then warmed before adding to the potatoes.

14
14
14
14
Prep Time:
25 mins
Cook Time:
25 mins
Total Time:
50 mins
Servings:
8
Yield:
8 servings

Ingredients

  • 3 tablespoons butter

  • 4 onion, sliced and separated into rings

  • 1 tablespoon white wine vinegar

  • ½ teaspoon ground dried thyme

  • 6 large baking potatoes, peeled and cubed

  • 1 tablespoon Dijon mustard

  • 2 tablespoons prepared horseradish, or to taste

  • salt and cracked black pepper to taste

  • ¼ cup softened butter

  • ¾ cup half-and-half

Directions

  1. Melt 3 tablespoons butter in a large skillet over medium-high heat. Add the onions and cook for 5 minutes. Reduce heat to medium, and continue cooking, stirring frequently, until the onions have softened, and achieved a deep brown color, 15 to 25 minutes. Stir in vinegar and thyme, and cook for 5 minutes more.

  2. While the onions are cooking, place cubed potatoes in large pot and cover with salted water. Bring to a boil, then reduce heat to medium-low, cover, and simmer until the potatoes can be pierced easily with a fork, about 20 minutes. Drain the potatoes in a colander, and allow to steam for a minute.

  3. To finish the dish, transfer the potatoes to a serving bowl, and use a potato masher to mix with Dijon mustard, horseradish, salt and cracked black pepper until smooth. Mix in softened butter, caramelized onions, and half-and-half until onions are distributed evenly.

Nutrition Facts (per serving)

381 Calories
13g Fat
61g Carbs
8g Protein
Nutrition Facts
Servings Per Recipe 8
Calories 381
% Daily Value *
Total Fat 13g 17%
Saturated Fat 8g 41%
Cholesterol 35mg 12%
Sodium 161mg 7%
Total Carbohydrate 61g 22%
Dietary Fiber 8g 29%
Total Sugars 7g
Protein 8g
Vitamin C 64mg 321%
Calcium 90mg 7%
Iron 3mg 14%
Potassium 1373mg 29%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.