Lunch: Make-Ahead Creamy Potatoes Recipe

Ingredients

5 pounds potatoes (about 6 large)
1/2 cup butter, divided
1/2 cup chopped fresh mushrooms
2 tablespoons all-purpose flour
1 cup 2% milk or half-and-half cream
1 teaspoon salt
1/2 teaspoon pepper
1/2 teaspoon dried thyme
2 cups (8 ounces) shredded sharp cheddar cheese
2 cups (16 ounces) sour cream
1 medium onion, chopped
1/2 cup dry bread crumbs
1/4 cup grated Parmesan cheese

Instructions

Place whole potatoes in a large stockpot; add water to cover. Bring to a boil. Reduce heat; cook, uncovered, 20-25 minutes or until tender. Drain.
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.
Peel and cube potatoes when cool enough to handle. Press through a potato ricer or strainer into a large bowl; stir in cheddar cheese, sour cream, mushroom mixture, onion and remaining butter. Transfer potato mixture to a greased 13x9-in. baking dish. Refrigerate, covered, overnight.
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.

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