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Make-Ahead Cheesy Mushroom-Onion Mashed Potatoes

Here's how you make Make-Ahead Cheesy Mushroom-Onion Mashed Potatoes
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  • Servings: 8
  • Prep: 30m
  • Cook: 55m
    • The following recipe serves 8 people.

Ingredients

The ingredients are:
  • 5 pounds potatoes, halved (about 6 large russet)
  • 1/2 cup butter, divided
  • 1 cup mushrooms, chopped
  • 2 tablespoons all-purpose flour
  • 1 cup half and half cream
  • 1 teaspoon salt
  • 1/2 teaspoon pepper
  • 1/2 teaspoon dried thyme
  • 8 ounces cheddar cheese, shredded (2 cups sharp cheese)
  • 16 ounces sour cream (2 cups)
  • 1 yellow onion, chopped (small onion)
  • 1/2 cup bread crumbs (dry)
  • 1/4 cup grated Parmesan cheese
We recommend you get your ingredients ready before you start cooking. Once you're ready, here are the steps to making this delicious recipe

How to Make

  • 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.

We hope you enjoy this recipe!

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