These classic Baked Mashed Potatoes are a rich, creamy, make-ahead side dish that is perfect for holidays, family dinners, and special occasions. Prepare them the day before, refrigerate them, and bake when you are ready to serve. Sour cream, cream cheese, and butter give the potatoes a smooth, comforting texture and a deliciously tangy flavor.


These Baked Mashed Potatoes are a treasured family-style recipe and a reliable holiday favorite. They are especially helpful when you want a comforting side dish without having to mash potatoes at the last minute. You can prepare the casserole ahead of time, chill it, and simply bake it before serving.
What makes this baked mashed potatoes recipe so good is the combination of sour cream, cream cheese, and butter. The sour cream and cream cheese add a gentle tang that balances the richness, while the butter gives the potatoes a smooth, classic flavor. The result is a soft, creamy, melt-in-your-mouth side dish that tastes special but is very easy to make.
The “baked” part of this recipe is what makes it so convenient. Instead of serving the mashed potatoes immediately, you spread them into a casserole dish and refrigerate them until needed. When it is time to eat, drizzle melted butter over the top, cover the dish with foil, and bake until hot. This method keeps the potatoes moist and makes them ideal for Thanksgiving, Christmas, Easter, Sunday dinner, or any meal where oven-ready side dishes make life easier.
Just 5 ingredients!

You only need a handful of simple ingredients to make these creamy baked mashed potatoes. The recipe uses potatoes, cream cheese, sour cream, butter, and salt, with optional garnishes such as paprika, chives, or parsley. Because the ingredient list is short, each ingredient matters.
- For the creamiest texture, full-fat cream cheese and sour cream work best. Lower-fat versions can be used if preferred, but the potatoes may be slightly less rich.
- Russet potatoes or Yukon Gold potatoes both work well. Russets create a fluffy mash, while Yukon Gold potatoes bring a naturally buttery texture. Red potatoes can also be used, especially if you enjoy a more rustic mashed potato with the skins left on.
- Use enough salt in the cooking water and in the finished potatoes. Potatoes need seasoning throughout, and properly salted water helps build flavor from the beginning.
How to Make Baked Mashed Potatoes (Made Ahead Recipe)
- Peel the potatoes and cut them into 2-inch cubes. Place them in a large pot, cover with water, add 2 tablespoons of salt, and bring to a boil.
- Once the water is boiling, cook the potatoes for about 20 minutes, or until they are tender and can be pierced easily with a fork. Drain well, return the potatoes to the warm pot, and let them sit uncovered for 5 minutes so excess moisture can steam away.
- Transfer the potatoes to the bowl of a stand mixer and mix on low until mostly smooth. Add melted butter, cream cheese, sour cream, and the remaining salt. Mix just until the potatoes are smooth and combined. Avoid overmixing, which can make mashed potatoes gummy.
- Spread the mashed potatoes into a 13×9-inch casserole dish. Serve right away if desired, or cover and refrigerate until ready to bake and serve.
Baking Instructions
If you are making these baked mashed potatoes ahead of time, reheat them gently in the oven so they stay creamy and moist.
- Preheat the oven to 350°F.
- Drizzle the potatoes with 2 tablespoons of melted butter and cover the baking dish with foil.
- Bake for 30–35 minutes, or until the potatoes are heated through.
- Garnish with paprika, chopped chives, or chopped parsley if desired. For extra richness, drizzle another tablespoon or two of melted butter over the top just before serving.

Variation Ideas
This make-ahead mashed potato casserole is delicious as written, but it is also easy to customize. Add mix-ins carefully so the potatoes remain creamy and balanced.
- Add roasted garlic for a deeper, savory flavor.
- Stir in 4–5 slices of cooked, crumbled bacon.
- Use ½ cup buttermilk in place of the sour cream for a slightly tangier flavor.
- Make the potatoes cheesy by adding 1 cup of shredded parmesan or shredded cheddar. If using salty cheese, reduce the salt slightly and season to taste.
📖 Recipe

Baked Mashed Potatoes (Made Ahead Recipe)
Ingredients
- 5 lbs russet or Yukon Gold potatoes
- 2 tablespoons + 1½ teaspoons salt
- 8 oz cream cheese
- 1 cup sour cream
- 6 tablespoons melted butter divided
- For garnish: paprika, chopped chives, or parsley
Instructions
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Peel the 5 lbs russet or Yukon Gold potatoes and cut them into 2-inch pieces. Place them in a large saucepan or stockpot. Add enough water to cover the potatoes, then add 2 tablespoons salt to the water.
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Place the pot over high heat and bring to a boil. Reduce the heat and cook for 20 minutes, or until the potatoes can be pierced easily with a fork.
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Drain the potatoes and return them to the pot. Set the pot on the still-warm stove and let the potatoes steam for 5 minutes to remove excess moisture.
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Place the potatoes in the bowl of a stand mixer and mix on low until mostly smooth. Add the 8 oz cream cheese, 1 cup sour cream, 4 tablespoons melted butter, and the remaining 1½ teaspoons salt. Mix on low until smooth.
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Taste and add more salt if needed.
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Spread the potatoes into a 13×9-inch baking dish. Let cool slightly, then cover and refrigerate for up to 24 hours.
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When ready to serve, preheat the oven to 350°F. Drizzle the remaining 2 tablespoons melted butter over the top.
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Cover with foil and bake for 30–35 minutes, or until the potatoes are heated through.
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Garnish with parsley, paprika, and/or chopped chives. Add another 1–2 tablespoons of melted butter on top if desired.
Notes
No stand mixer? Mash the potatoes with a hand mixer, potato masher, or ricer. Be careful not to overmix, as overworked potatoes can turn gummy.
Add mix-ins such as roasted garlic, cooked and crumbled bacon, or shredded cheddar or parmesan while mixing the potatoes. If you add bacon or cheese, reduce the salt slightly and season to taste.
Leftovers will keep for 4–5 days in the refrigerator.
You can freeze the whole casserole. Cover it tightly with two layers of foil and freeze for up to one month. Defrost in the refrigerator for two days, then reheat as directed.
Nutrition
Carbohydrates: 42g
Protein: 7g
Fat: 19g
Sodium: 791mg
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Old Fashioned Sweet Potato Casserole with Pecans
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