5 from 1 vote

Mashed Potato Casserole

This Mashed Potato Casserole is creamy and fluffy! It’s a comfort food casserole perfect for Thanksgiving or other special meals.

Mashed potato casserole in a white pan.

Mashed potatoes are a staple at all our holiday meals. I thought I’d try something a little different this year and make a yummy Mashed Potato Casserole. I think I might even like it better! Each bite is full of delicious flavour and creaminess. I love the melty cheese on top. It’s the ultimate comfort food.

We celebrated our Thanksgiving in Canada in early October so the next big occasion is Christmas for us. I know that Americans are celebrating their Thanksgiving tomorrow so I wanted to get this recipe out just in time. 

I like mashed potatoes, but I don’t love them. This recipe, though? I’d put it in the love department. It’s a keeper and one I’ll make again and again. 

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    It’s fairly straightforward to make. If you are making mashed potatoes, take a few extra steps and make this easy casserole recipe. You can thank me later.

    Ingredients to make mashed potato casserole.
    Steps to make mashed potato casserole.
    Steps to make mashed potato casserole.
    Mashed potato casserole on a serving spoon.

    This recipe has both sour cream and cream cheese in it. I think that helps to make it so rich and creamy. 

    I served it for dinner the other night and it received rave reviews. I love seeing people taking seconds of my recipes. You know you have a good recipe when that happens. 

    How to Make Mashed Potato Casserole

    The first step is to cook the potatoes. Boil the peeled potatoes on the stovetop for 10 minutes or until fork tender. Drain the water.

    Add salt, pepper and butter. Add eggs, cream cheese and sour cream and mash to combine. 

    Pour into greased 9×13 casserole dish and sprinkle with cheese. Bake for 50 minutes at 325F. 

    Remove from oven and top with sliced green onions, if desired. Serve it hot with chicken, turkey or beef. 

    Mashed potato casserole with scoops out of it.

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    We had lots leftover and it still tasted delicious heated up the next day in the microwave. 

    You could also freeze it if you wanted to make a few casseroles to save for later. I would do this if I had a freezer. Someday….

    Mashed potato casserole on a plate with a fork.

    Potato Recipes

    Craving more potatoes? Good! I have some recipes for you to check out. 

    You might also like Sweet Potato Casserole, Cheesy Corn Casserole, Loaded Mashed Potatoes, Party Potatoes, Loaded Baked Potato Soup, German Potato Soup, Irish Potatoes or French Fry Casserole

    Are you a fan of mashed potatoes? If so, do you think you’d like to try them in a casserole? 

    5 from 1 vote

    Mashed Potato Casserole

    Created by Stacie Vaughan
    Servings 6
    Prep Time 10 minutes
    Cook Time 1 hour
    Total Time 1 hour 10 minutes
    A perfect make-ahead side dish for holiday meals. Creamy mashed potatoes, amped up with cream cheese and sour cream, are a huge hit and are a delicious potato side dish for any occasion.


    • 10 potatoes peeled and halved
    • 2 large eggs
    • 1 cup cheddar cheese shredded
    • 1 package cream cheese 8oz/250g package, softened
    • 1 cup sour cream
    • 1 tsp salt
    • ½ tsp pepper
    • 3 tbsp unsalted butter
    • 3 green onions for garnish, optional


    • Preheat oven to 325°F.
    • Boil potatoes on the stovetop for 10 minutes or until tender. Add salt, pepper and butter. Add eggs, cream cheese and sour cream and mash to combine.
    • Pour into a greased 9×13 inch casserole dish and sprinkle with cheese.
    • Bake for 50 minutes. Top with green onions if desired.


    Serving: 1cup | Calories: 598kcal | Carbohydrates: 147.6g | Protein: 17.5g | Fat: 32.4g | Saturated Fat: 18.7g | Polyunsaturated Fat: 10.7g | Trans Fat: 0.2g | Cholesterol: 147.6mg | Sodium: 737.6mg | Fiber: 8.6g | Sugar: 5.8g

    The information shown is an estimate provided by an online nutrition calculator. It should not be considered a substitute for a professional nutritionist’s advice.

    Course Casseroles
    Cuisine American
    Keyword mashed potato casserole

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    Recipe Rating


    1. This sounds so delicious. Potatoes are one of my favorite foods. Thanks for sharing at the Snickerdoodle Create Bake Make Party.

    2. Our family will really enjoy your Mashed Potato Casserole! Hope you are having a good week and thanks so much for sharing with us at Full Plate Thursday!
      Miz Helen

    3. This sounds delicious but I’m allergic to eggs…is there an alternative? Thanks

      1. Is there an egg alternative that you normally use in recipes? I’m not that familiar with egg substitutions.

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