These Creamy Oven Baked Mashed Potatoes are so simple to make, and I’m including a how to video and make ahead instructions here too!

Creamy Oven Baked Mashed Potatoes in a Casserole Dish

What makes these mashed potatoes so creamy?  Additions of cream cheese, sour cream and butter make these potatoes so smooth and creamy and rich.  Everyone loves these, and they’re always a bit hit.  You can lighten up the recipe a bit by using low fat cream cheese and light sour cream, but I recommend you go all out and use the good stuff!

Potatoes peeled and cut on a cutting board

How to Make Creamy Oven Baked Mashed Potatoes:

You’ll need 10 large Russet or Yukon Gold potatoes. Those are the best potatoes since they are higher in starch. They’ll give you smooth and fluffy mashed potatoes. The potatoes are peeled and chopped. They’re boiled until quite soft.

Mashing potatoes in a bowl

The the potatoes are transferred to a bowl and mashed. I like this potato masher.

Blending potatoes to make mashed potatoes in a bowl

Then you’ll mix in cream cheese, sour cream and garlic salt.  That’s it!

Creamy Oven Baked Mashed Potatoes in a casserole dish ready for the oven

The mashed potatoes are spooned into a buttered casserole dish and dotted with pieces of butter.  You’ll garnish with chopped chives and a sprinkle of paprika.  And then they are baked for 15 minutes.  Or you can make them ahead and bake them when you’re ready for them!

Are there Make Ahead instructions for these Mashed Potatoes?

I like to make these potatoes ahead of time and keep them in the refrigerator. Prepare the recipe and place the potatoes in a casserole dish with garnishes on top. Cover with plastic wrap and refrigerate until ready to heat. Remove from the refrigerator and let it sit at room temperature for at least an hour before baking. Remove plastic wrap, and bake as directed.  If you’re lacking oven space, use your slow cooker to heat up the potatoes instead!

serving creamy oven baked mashed potatoes out of a white casserole dish

eating creamy oven baked mashed potatoes with a fork

These oven baked mashed potatoes turn out so incredibly creamy and delicious. They are the perfect addition to a special meal or a Sunday night dinner. Enjoy!

How to Make Perfect Mashed Potatoes

I also have a step-by-step tutorial on How to Make the Best Mashed Potatoes, if you’re interested in checking that out.  I think they turn out perfect, but they’re not quite as creamy as my Creamy Oven Baked Mashed Potatoes since there is not cream cheese or sour cream in that one.

Here are a few more holiday side dish recipes you might be interested in:

And if you’re looking for complete Thanksgiving menu ideas, be sure to check out my Traditional Thanksgiving Dinner Menu and my Gluten Free Thanksgiving Dinner Menu.

Creamy Oven Baked Mashed Potatoes in a Casserole Dish
4.19 from 43 votes

Creamy Oven Baked Mashed Potatoes

These mashed potatoes are so simple to make!
Prep: 25 minutes
Cook: 35 minutes
Total: 1 hour
Servings: 12 servings
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Ingredients

Instructions 

  • Boil the potatoes in a large pot of water until tender. Drain, transfer to a large bowl and mash. Add all of the other ingredients and beat with an electric mixer until fluffy. Transfer the potatoes to a large, buttered casserole dish. Top with dots of butter, chopped chives and paprika.
  • Preheat the oven to 350 degrees F. Bake the potatoes for 15 minutes, or until they begin to brown on top.

Notes

  • *Make ahead instructions: Prepare the recipe and place in a dish with garnishes on top. Cover with plastic wrap and refrigerate until ready to heat. Let sit at room temperature for at least an hour before baking. Remove plastic wrap, and bake as directed.
  • *If you're lacking oven space, warm these up in a crockpot instead.
  • *It's' perfectly ok to lighten this recipe up a bit by using low fat sour cream and cream cheese.

Nutrition

Serving: 1serving, Calories: 186kcal, Carbohydrates: 17g, Protein: 4g, Fat: 11g, Saturated Fat: 6g, Cholesterol: 33mg, Sodium: 97mg, Potassium: 599mg, Fiber: 3g, Sugar: 1g, Vitamin A: 400IU, Vitamin C: 15.3mg, Calcium: 79mg, Iron: 4.4mg

Nutrition information is automatically calculated, so should only be used as an approximation.

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Creamy Oven Baked Mashed Potatoes in a foil pan just out of the oven

4.19 from 43 votes (34 ratings without comment)

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33 Comments

  1. Green Gal says:

    Your recipe says to use 10 large russet or yukon gold potatoes. About how many pounds of potatoes would this be? I do better using weight or volume, your “large” may not be my “large” Thanks!

    1. Lori Lange says:

      I’m guessing about 5 1/2 to 6 pounds. If it’s a little more, that’s okay… you can add a little more of this or that to make the consistency just how you like it.

  2. Cheri says:

    It says 10 potatoes. Approximately how may pounds?

    1. Lori Lange says:

      5 1/2 to 6 pounds should be about right

  3. Abigail says:

    If needed to improvise could you use instant mashed potatoes?

    1. Lori Lange says:

      I don’t know anything about instant mashed potatoes, so I can’t help you there!

  4. Debbieparis says:

    Do I bake them in the oven and then reheat them in the slow cooker?

    1. Lori Lange says:

      you can do that, yes.

  5. Vicki N says:

    Can you make this recipe with unpeeled potatoes?

    1. Lori Lange says:

      I haven’t tried that with this recipe, but I do make mashed potatoes with unpeeled red potatoes sometimes. You could try it!

  6. Hayley says:

    5 stars
    This was a GREAT quick and easy recipe! My boyfriend LOVED it!! Just can’t tell him there was sour cream in it…what he dont know won’t hurt him🤣🤣🤫🤫🤫

  7. Tom says:

    I’m new to making meals, so forgive me for asking – how is this 25 minutes prep time? Just scrubbing, peeling and boiling the potatoes was way past 25 minutes. But these are some tasty potatoes! Thanks.

    1. Lori Lange says:

      Well, the boiling is part of the cooking time not prep time. But perhaps it took you a little longer for peeling? It’s okay 🙂

  8. Linda Dean says:

    5 stars
    Love pototoe and creame cheese recipes. Was awesome

  9. Judy says:

    What size casserole? 13 × 9?

    1. Lori Lange says:

      If it’s a deep one– a little larger than 13×9 would be best if you have one!

  10. Carrie says:

    5 stars
    Love this idea

    1. Gary Gearheart says:

      Can you 1/2 the recipe ?

    2. Lori Lange says:

      Should be fine!