Mashed Potato Casserole

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Mashed Potato Casserole is serious comfort food. Mashed potatoes spread into a casserole dish and baked, then sprinkled with cheese and green onions. A great make ahead side dish perfect for a holiday or any time of year!

Loaded mashed potato casserole topped with cheddar, green onions, and bacon bits

 

Mashed potato casserole is serious comfort food.  Mashed potatoes are spread into a dish and baked, then sprinkled with cheese and green onions.

This casserole is great for a holiday menu or party because it serves 10, the mashed potatoes could be prepared ahead of time, and it’s a real crowd pleaser.  Who doesn’t love warm cheesy potatoes?

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Loaded mashed potato casserole topped with cheese, green onions, and bacon in a white serving bowl

Mashed Potato Casserole recipe

5 from 2 votes
Mashed Potato Casserole is serious comfort food. Mashed potatoes spread into a casserole dish and baked, then sprinkled with cheese and green onions. A great make ahead side dish perfect for a holiday or any time of year!
Prep Time 15 minutes
Cook Time 45 minutes
Total Time 1 hour

Video

Servings 10 servings
Calories 318 kcal

Ingredients
 

  • 8 medium russet potatoes
  • 1 cup sour cream
  • 4 tablespoons unsalted butter
  • 1 teaspoon salt
  • 1/4 teaspoon ground black pepper
  • ¼ to 1/2 cup chicken broth
  • 2 cups shredded cheddar cheese
  • 3 green onions -sliced
  • 2 tablespoons bacon bits or crumbles

Instructions

  • Peel the potatoes and chop them into cubes (about 2”x2”).
  • Place the potatoes in a large pot and cover with water. Boil the potatoes until the potatoes are cooked through (about 15 minutes). Drain the water from the potatoes using a colander. Return the potatoes back to the hot pot.
  • Mash the potatoes with a potato masher. Add the sour cream, butter, salt, and pepper to the potatoes and stir to combine. Stir in the chicken broth until the mashed potatoes are your preferred consistency.
  • Preheat oven to 350 degrees F.  Spray a 9x13 inch baking dish with cooking spray.
  • Spread the potatoes into the baking dish. Sprinkle evenly with cheese.  Cover the dish with foil and bake for 20 minutes.
  • Immediately after removing the dish from the oven, sprinkle with the green onions and bacon bits. 

Nutrition

Serving: 1/10th of the recipe | Calories: 318kcal | Carbohydrates: 32g | Protein: 10g | Fat: 17g | Saturated Fat: 10g | Cholesterol: 49mg | Sodium: 425mg | Potassium: 782mg | Fiber: 2g | Sugar: 1g | Vitamin A: 545IU | Vitamin C: 10.6mg | Calcium: 214mg | Iron: 1.7mg
Course Side Dish
Keyword christmas, easy, make ahead, mashed potatoes, thanksgiving
Cuisine American
Author Amanda Finks

spoon scooping out cheesy mashed potato casserole

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About Amanda Finks

I’m a Registered Dietitian Nutritionist living in Zionsville, IN. I’m an avid cook, travel nerd, & lover of good food! I’m trained in Food Science & recipe development. It’s my mission to bring you the BEST recipes your whole family will love!

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