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Our family loves Mashed Potato Casserole.

Mashed Potato Casserole The Southern Lady Cooks


Mashed Potato Casserole is a great recipe! We love potatoes “fixed” this way and you can do so many different variations. Great for holidays or just anytime. Every time I have ever taken this easy casserole to a gathering I have come back with an empty pan. It’s just that good!

Ingredients Needed for Mashed Potato Casserole:

Large potatoes, peeled


Butter or margarine

Cream cheese

Sour cream

Evaporated milk

Black pepper

Onion flakes

Garlic powder

Monterey Jack cheese, shredded or cheese of your choice


Recipe Notes: You could also add chopped bacon or ham, regular onions, or green onions to this dish.

Recipe Comments: “I served this as a side to Bang Bang Chicken. I needed a mashed potato that wasn’t boring and could stand alone. This was it. Absolutely perfect!”-Deb

“I took this to work for a Thanksgiving meal and everyone raved about it!”-Sarah

If you like this recipe, you may want to try our cheesy crockpot potatoes.

Mashed Potato Casserole The Southern Lady Cooks

Mashed Potato Casserole The Southern Lady Cooks

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Print Recipe
5 from 8 votes

Mashed Potato Casserole

This recipe for Mashed Potato Casserole is a family favorite and one you will want to keep!
Prep Time20 mins
Cook Time30 mins
Total Time50 mins
Course: Side Dish
Cuisine: American
Keyword: Mashed Potato Casserole
Servings: 8 servings


  • 7 or 8 large potatoes peeled
  • 1 teaspoon salt
  • 4 tablespoons butter or margarine
  • 4 ounces cream cheese
  • 1/4 cup sour cream
  • 1/2 cup evaporated milk
  • 1/2 teaspoon black pepper
  • 1 teaspoon onion flakes
  • 1/4 teaspoon garlic powder
  • 1 to 2 cups Monterey Jack cheese shredded or cheese of your choice
  • 1 teaspoon paprika


  • Boil the peeled potatoes, drain and mash with the salt, butter, cream cheese, sour cream, milk, pepper, onion flakes and garlic.
  • Spread mashed potatoes into a sprayed casserole dish and sprinkle with shredded cheese and paprika.
  • Bake in preheated 375 degree oven, uncovered, for 30 to 35 minutes.


You can add chopped bacon or ham, regular onion or green onion to this recipe.

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5 Secrets to Old-Fashioned
Southern Cooking

Tips, tricks & recipes to cook Southern food just like Grandma used to!




  1. Do you hand mash or use a mixer?

  2. What kind of potatoes did you use? This looks great and I can’t wait to make it.

  3. Janna Newman says:

    I need to make this ahead of time for Thanksgiving and freeze it. Would you recommend freezing before or after baking it? Thank you!
    ~ Janna

    • The Southern Lady says:

      I would bake it first, but I have never frozen this so can’t say exactly how it would turn out. I would think it would freeze okay.

  4. What size casserole dish did you use?

  5. I served this as a side to Bang Bang Chicken. I needed a mashed potato that wasn’t boring and could stand alone. This was it. Absolutely perfect!5 stars

  6. How many people does this serve? Want to make for thanksgiving 15 people but not sure if I should double or triple the recipe

  7. Have you tried replacing the potatoes with cauliflower since that’s the new trend?

  8. Can I just use regular milk?

  9. Judy Chandler says:

    Do you think instant potatoes (reconstituted) would work in this recipe?

  10. Making them tomorrow night! Can’t wait! IS a glass dish ok to use? (Pyrex)

  11. Della Steinlage says:

    Thank you for not putting a bunch of needless pictures or videos or more pages to view before actually seeing the recipe itself. This is why I like your FB posts so much more than the others. I am certainly going to download and try this one.

  12. Carolyn Vigna says:

    We feed the high school football team before games on Friday night. I made this, doubled the recipe, & needless to say, came home with an empty bowl.5 stars

    • The Southern Lady says:

      So happy to hear everyone enjoyed this recipe, Carolyn! Thank you for letting me know. That’s a lot of mashed potatoes! Have a great week ahead.

  13. The Southern Lady says:

    I have not tried it Beverly but see no reason why you couldn’t do both.

  14. Can you make this ahead of time? Say earlier in the day

  15. I have leftover mashed potatoes I’d like to use. How many cups would that be?

  16. Thank you for all your delicious recipes!

  17. Brigitte Tomlinson says:

    I tried this a few months back, after seeing the recipe by FB. I loved it – Absolutely delicious!!! I live in Germany and all cheese types are not readily available…but cheddar is…works just fine!5 stars

  18. About what size casserole dish? i would love to make this for an event we are having at church.

  19. The Southern Lady says:

    Yes, you could do that Mark.

  20. I could go for some of those anytime!

  21. It looks delicious! I’ll have to give it a try!

  22. Terry Love says:

    I had this kind of Mashed potatoes at a party in Indianapolis, IN several years ago, and believe me, it was the best mashed potatoes I ever had. Thanks Southern Lady Cooks. Very happy to finally get the recipe. LOVE IT.

  23. Are onion flakes dehydrated onions?

  24. We call that cheese and potato pie here in the UK, yum

  25. What a great variation…especially the onion flakes…. Thank you for posting!

  26. Is monteray jack a mild cheese or tangy coz we dont have that here in Australia so i need to find a substitute for it ?

  27. I could live on just mashed potatoes, especially this recipe!!5 stars

  28. I basically make this same recipe, but mix in a beaten egg and pimentos (and the cheese) to the potatoes before baking. They puff up nicely. My mother would always fix them this way, expecially for holidays.

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5 Secrets to Old-Fashioned
Southern Cooking


Tips, tricks & recipes to cook Southern food just like Grandma used to!