Make-Ahead Cheesy Mushroom-Onion Mashed Potatoes

30m
Prep Time
55m
Cook Time
1h 25m
Ready In


"Good for entertaining! Makes around 8 one-cup servings"

Original is 8 servings

Nutritional

  • Serving Size: 1 (451.7 g)
  • Calories 556.2
  • Total Fat - 29.3 g
  • Saturated Fat - 18.2 g
  • Cholesterol - 79.6 mg
  • Sodium - 735.2 mg
  • Total Carbohydrate - 56 g
  • Dietary Fiber - 7.6 g
  • Sugars - 4.9 g
  • Protein - 19.3 g
  • Calcium - 443.7 mg
  • Iron - 1.9 mg
  • Vitamin C - 28.1 mg
  • Thiamin - 0.3 mg

Step by Step Method

Step 1

Place potato halves in a large stockpot; add water to cover. Bring to a boil. Reduce heat; cook, uncovered, 20-25 minutes or until tender. Drain, then cool.

Step 2

Meanwhile, in a large saucepan, heat 1/4 cup butter over medium-high heat. Add mushrooms; cook and stir 2-4 minutes or until tender. Stir in flour until blended; gradually whisk in milk, salt, pepper and thyme. Bring to a boil, stirring constantly; cook and stir 1-2 minutes or until thickened.

Step 3

When the potatoes are cool enough to handle. Press through a potato ricer or strainer into a large bowl; stir in cheddar cheese, sour cream, mushroom mixture, onions and remaining butter. Transfer potato mixture to a greased 13x9-in. baking dish. Refrigerate, covered overnight or until your ready to bake it.

Step 4

Preheat oven to 375°. Remove potatoes from refrigerator; uncover and let stand while oven heats. Sprinkle with bread crumbs and Parmesan cheese. Bake, uncovered, 55-65 minutes or until heated through.

Tips


No special items needed.

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