How to Make Mama's Famous Cheesy Mashed Potato Casserole - A Step-by-Step Guide

There are few comfort foods more beloved than a heaping helping of creamy, cheesy mashed potatoes. Whether they’re served alongside a juicy roast chicken, a hearty pot roast, or simply enjoyed on their own, mashed potatoes are a staple on the dinner table for many families. And when those mashed potatoes are baked into a cheesy, indulgent casserole, it takes this classic side dish to a whole new level of deliciousness.

One such casserole that has become a favorite in many households i...

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Ingredients

  • 5 pounds potatoes, peeled and cubed
  • 1 cup sour cream
  • ½ cup butter
  • ½ cup grated Parmesan cheese
  • 6 ounces cream cheese, softened
  • 4 ounces extra-sharp Cheddar cheese, shredded
  • 4 stalks green onions, chopped
  • 1 teaspoon salt
  • 1 teaspoon ground black pepper

Information

  • Prep Time: 25 mins
  • Cook Time: 1 hr 5 mins
  • Total Time: 1 hr 30 mins
  • Servings: 10
  • Yield: 10 servings

  • Place potatoes into a large pot and cover with salted water; bring to a boil. Reduce heat to medium-low and simmer until tender, 15 to 20 minutes.
  • While the potatoes are cooking, preheat the oven to 350 degrees F (175 degrees C).
  • Drain potatoes and return to the pot. Mash while hot. Add sour cream, butter, Parmesan cheese, cream cheese, Cheddar cheese, green onions, salt, and pepper; beat until well blended. Transfer to a 3-quart casserole.
  • Bake in the preheated oven for 45 minutes. Serve piping hot.
  • Nutrition

    430 cal.

    • Total Fat: 25g
    • Saturated Fat: 16g
    • Cholesterol: 69mg
    • Sodium: 507mg
    • Total Carbohydrate: 42g
    • Dietary Fiber: 5g
    • Total Sugars: 2g
    • Protein: 11g
    • Vitamin C: 46mg
    • Calcium: 202mg
    • Iron: 2mg
    • Potassium: 1047mg