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Easy Party Potatoes | Creamy Make-Ahead Mashed Potato Casserole

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If you’re looking for a crowd-pleasing side dish that disappears fast, these Party Potatoes are it. Rich, creamy, and baked until golden, this classic mashed potato casserole is the ultimate comfort food for holidays, potlucks, and family gatherings. Best of all, it’s make-ahead friendly, so you can prep it early and bake when you’re ready.

Creamy party potatoes baked in a white casserole dish with melted cheddar, buttery breadcrumb topping, and chives on a white marble countertop.
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These creamy party potatoes are baked until golden and finished with melted cheddar and a crisp breadcrumb topping—perfect for entertaining.

This recipe combines fluffy mashed potatoes with sour cream and cream cheese for an ultra-creamy texture, then finishes with a buttery breadcrumb topping and melted cheddar. Simple ingredients, big flavor, and always a hit.

Why You’ll Love This Recipe

  • Perfect for holidays, parties, and potlucks
  • Can be made ahead and baked later
  • Creamy, rich, and comforting
  • Easy to double for a crowd
  • Uses simple pantry ingredients
Flat lay of ingredients for party potatoes including mashed potatoes, shredded cheddar cheese, sour cream, cream cheese, breadcrumbs, melted butter, chives, and garlic powder on a white marble countertop.
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Ingredients

  • 4 cups mashed potatoes (about 8–10 large potatoes) or 4 cups prepared instant potatoes
  • 1 cup sour cream
  • 8 oz cream cheese, softened
  • 1 teaspoon minced chives
  • ¼ teaspoon garlic powder
  • ¼ cup dry bread crumbs
  • 1 tablespoon butter, melted
  • ½ cup shredded cheddar cheese

Instructions

  1. Preheat oven to 350°F and grease a 2-quart casserole dish.
  2. In a large bowl, combine mashed potatoes, sour cream, cream cheese, chives, and garlic powder. Mix until smooth and creamy.
  3. Spread the potato mixture evenly into the prepared casserole dish.
  4. In a small bowl, stir together bread crumbs and melted butter. Sprinkle evenly over the potatoes.
  5. Bake uncovered for 50–60 minutes, or until heated through and lightly golden.
  6. Remove from oven, sprinkle cheddar cheese over the top, and return to the oven for 5 minutes, just until the cheese melts.
  7. Serve warm.

Make-Ahead Instructions

This potato casserole is perfect for prepping ahead of time. Assemble the casserole (without baking), cover tightly, and refrigerate for up to 24 hours. When ready to bake, remove from the fridge while the oven preheats and bake as directed.

Wooden spoon scooping creamy party potatoes from a baked mashed potato casserole with melted cheddar, buttery breadcrumb topping, and chives on a marble countertop.
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A warm, creamy scoop of party potatoes straight from the casserole dish with melted cheddar and crispy breadcrumbs.

Storage & Reheating

  • Refrigerator: Store leftovers in an airtight container for up to 4 days.
  • Reheating: Warm in the oven at 325°F until heated through, or microwave individual portions.

Serving Ideas

These Party Potatoes pair perfectly with:

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Creamy party potatoes baked in a white casserole dish with melted cheddar, buttery breadcrumb topping, and chives on a white marble countertop.
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Party Potatoes (Creamy Mashed Potato Casserole)

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  • Author: Chrissi | firsthomelovelife.com
  • Total Time: 1 hour 5 minutes
  • Yield: 8–10 SERVINGS 1x
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Description

These Party Potatoes are ultra-creamy, rich, and baked until golden with melted cheddar and a buttery breadcrumb topping. This make-ahead mashed potato casserole is perfect for holidays, potlucks, and family dinners.

Ingredients

Scale

  • 4 cups mashed potatoes (about 8–10 large potatoes) or 4 cups prepared instant potatoes

  • 1 cup sour cream

  • 8 oz cream cheese, softened

  • 1 teaspoon minced chives

  • ¼ teaspoon garlic powder

  • ¼ cup dry bread crumbs

  • 1 tablespoon butter, melted

  • ½ cup shredded cheddar cheese

Instructions

  • Preheat oven to 350°F. Grease a 2-quart casserole dish.

  • In a large bowl, combine mashed potatoes, sour cream, cream cheese, chives, and garlic powder until smooth and creamy.

  • Spread the potato mixture evenly into the prepared casserole dish.

  • In a small bowl, mix bread crumbs with melted butter and sprinkle evenly over the potatoes.

  • Bake uncovered for 50–60 minutes, until heated through and lightly golden.

  • Sprinkle shredded cheddar cheese over the top and return to the oven for 5 minutes, or until melted.

  • Serve warm.

Notes

  • This casserole can be assembled up to 24 hours in advance and refrigerated before baking.

  • Let the dish sit at room temperature for 15 minutes before baking if chilled.

  • Great for doubling to feed a crowd.

  • Prep Time: 15 MINUTES
  • Cook Time: 50 MINS
  • Category: Side Dish
  • Method: BAKED
  • Cuisine: AMERICAN COMFORT

Did you make this recipe?

Share a photo and tag me @ihearthomesteading! I can’t wait to see what you’ve made!

Frequently Asked Questions

Can I use instant mashed potatoes?
Yes. Prepared instant potatoes work well and save time.

Can I freeze this casserole?
It’s best enjoyed fresh or refrigerated. Freezing can slightly change the texture due to the dairy.

Can I add extras?
Absolutely. Cooked bacon, caramelized onions, or extra cheese all work beautifully.

Final Thoughts

These Party Potatoes are the kind of recipe everyone asks for after the first bite. Creamy, comforting, and easy to prepare ahead, they’re a reliable side dish you’ll come back to again and again—especially for holidays and gatherings.

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