Here's everything you'll need.
For the Potato Casserole
4 large russet potatoes, peeled and thinly sliced
1 can condensed cream of chicken soup
1/4 cup unsalted butter, melted (1/2 stick)
1 medium onion, finely chopped
2 cups sour cream, preferably full-fat
2 cups sharp cheddar cheese, shredded and divided
1 cup milk, whole or 2% recommended
1 teaspoon salt
1/2 teaspoon black pepper, preferably freshly cracked
1 teaspoon garlic powder
1/2 teaspoon paprika, optional
1/2 cup breadcrumbs, optional, for a crunchy topping
Fresh parsley, optional, for garnish
What You'll Need
You don't need any fancy equipment for this recipe.
9×13-inch glass casserole dish
Large mixing bowl
Sharp knife or mandoline slicer
Cutting board
Measuring cups and spoons
Mixing spoon or whisk
Aluminum foil
Cheese grater
A Mandoline Makes Slicing Easier
If you have a mandoline slicer, it can make quick work of the potatoes and help you achieve evenly thin slices.
If you're using one, be especially careful with your fingers and use the safety guard.
Even slices matter because potatoes that are dramatically different in thickness won't cook at the same rate.
Ingredient Additions and Substitutions
This casserole is already wonderfully comforting as written, but you can make a few adjustments depending on what you have in the kitchen.
Use a Different Potato
Russet potatoes are ideal for this recipe because their starchiness works beautifully in a creamy casserole.
However, Yukon Gold potatoes can also be used if you prefer their naturally buttery flavor and firmer texture.
Try Another Cheese
Sharp cheddar gives this casserole plenty of flavor, but you can experiment with other melting cheeses.
A combination of cheddar and Monterey Jack would be especially creamy, while Colby or a mild cheddar can create a gentler flavor.
Add More Vegetables
Want to turn this into an even heartier side dish?
Consider adding finely chopped mushrooms, cooked broccoli, or sautéed bell peppers.
Just remember that watery vegetables can change the consistency of a casserole, so cook or drain them well before adding them.
Add Bacon
Cooked, crumbled bacon can add smoky, salty flavor.
Sprinkle it between the potato layers or over the cheese before baking.
Make the Topping Extra Crunchy
The breadcrumbs are optional, but they can add a lovely contrast to the creamy interior.
For an even more flavorful topping, combine the breadcrumbs with a small amount of melted butter before sprinkling them over the casserole.
How to Make Creamy Potato Casserole
Step 1: Prepare the Potatoes
Peel the russet potatoes and slice them thinly.
Try to keep the slices as uniform as possible so they cook evenly.
Set them aside while you prepare the creamy mixture.
Step 2: Prepare the Creamy Sauce
In a large mixing bowl, combine the condensed cream of chicken soup, sour cream, milk, melted butter, chopped onion, salt, black pepper, garlic powder, and optional paprika.
Stir until the mixture is smooth and evenly combined.
The sauce should look creamy and thick enough to coat the potatoes.
Step 3: Assemble the Casserole
Arrange the sliced potatoes in your 9×13-inch glass casserole dish.
Pour the creamy soup mixture over the potatoes, making sure the sauce is distributed throughout the casserole.
You want the potatoes thoroughly coated so they have plenty of creamy sauce as they bake.
Step 4: Add the Cheese
Sprinkle part of the shredded sharp cheddar over the casserole.
Reserve some cheese for the final topping.
That reserved cheese is going to give you the gorgeous bubbling, golden finish that makes this casserole so tempting.
Step 5: Cover and Bake
Cover the casserole with aluminum foil and bake according to your recipe's specified temperature and time.
The potatoes should become tender as they cook in the creamy sauce.
Note: The source recipe excerpt provided for this article does not specify the oven temperature or baking time, so those details should be confirmed before preparing the dish.
Step 6: Uncover and Finish
Once the potatoes are tender, remove the foil.
Sprinkle the remaining cheddar cheese over the top.
If you're using breadcrumbs, scatter them evenly over the cheese.
Return the casserole to the oven and continue baking until the cheese is melted and bubbling and the topping has developed a beautiful golden color.
Step 7: Garnish and Serve
Let the casserole rest briefly before serving.
A little freshly chopped parsley sprinkled over the top adds a pop of color and freshness.
Then dig in!
The potatoes should be creamy and tender underneath, with a rich, cheesy topping on top.
What to Serve With Creamy Potato Casserole
This potato casserole can work as a side dish for just about any comforting main course.
Try serving it alongside:
Roast chicken
Baked chicken thighs
Turkey
Meatloaf
Roast beef
Grilled steak
Pork chops
Baked ham
Green beans
Roasted carrots
A crisp green salad
For a holiday meal, it would be right at home beside turkey, ham, roasted vegetables, and cranberry sauce.
Tips for Making the Best Potato Casserole
Slice the Potatoes Thinly and Evenly
This is one of the most important tips.
If the slices are too thick, the potatoes may take longer to become tender.
Keeping the slices similar in thickness helps everything cook more evenly.
Don't Skimp on the Sauce
The creamy mixture is what transforms ordinary potatoes into a rich casserole.
Make sure the soup mixture is spread throughout the dish rather than concentrated in just one area.
Grate Your Own Cheese
Freshly shredded cheddar generally melts more smoothly than pre-shredded cheese.
A block of sharp cheddar is worth the few extra minutes of preparation.
Cover Before Finishing Uncovered
Covering the casserole during the main baking stage helps create the tender, creamy interior.
Uncovering toward the end allows the cheese and breadcrumbs to brown beautifully.
Let It Rest Before Serving
It's tempting to grab a spoon the second the casserole comes out of the oven.
I get it!!
But giving it a short rest helps the sauce settle and makes the casserole easier to serve.
Can You Make This Casserole Ahead of Time?
Yes, this type of potato casserole can be convenient for meal preparation and holiday cooking.
If preparing it ahead, keep the assembled casserole properly refrigerated and follow safe food-handling practices. Depending on how far in advance you're preparing it, you may also prefer to assemble the components closer to baking time to preserve the best potato texture.
For a holiday meal, having the ingredients prepared ahead can make the final cooking process much less hectic.
How to Store Leftover Potato Casserole
Allow leftovers to cool appropriately, then transfer them to a covered container and refrigerate.
For the best quality, enjoy leftovers within a few days.
When reheating, heat individual portions until hot throughout. A little extra cheese sprinkled over the top can make leftovers feel wonderfully fresh again.
General Recipe Information
Recipe type: Side dish / casserole
Cuisine: American-inspired comfort food
Main ingredient: Russet potatoes
Preparation style: Baked casserole
Best for: Weeknight dinners, holidays, potlucks, and family gatherings
Pan size: 9×13-inch casserole dish
Frequently Asked Questions
Can I use frozen potatoes?
The recipe is written for fresh russet potatoes. Frozen potatoes may behave differently because of their moisture content and texture, so using fresh potatoes gives you the most predictable result.
Do I have to use russet potatoes?
No. Yukon Gold potatoes are a possible alternative, although the texture and cooking time may differ.
Can I leave out the breadcrumbs?
Absolutely. Breadcrumbs are optional. The casserole will still have a delicious cheesy topping without them.
Can I use reduced-fat sour cream?
You can, although full-fat sour cream provides the richest texture. Reduced-fat varieties may produce a slightly different consistency.
What cheese works best?
Sharp cheddar is the cheese specified in this recipe and gives the casserole a bold, savory flavor. You can experiment with other good-melting cheeses if desired.
How do I know when the potatoes are done?
The potatoes should be tender when pierced with a fork or thin knife. If they still feel firm in the center, they need additional cooking time.
Can I add meat to this casserole?
Yes. Cooked bacon, diced ham, or cooked shredded chicken can turn the casserole into a more substantial dish.
Final Thoughts
There are few things more comforting than a bubbling casserole coming out of the oven.
This creamy potato casserole takes simple russet potatoes and turns them into something rich, cheesy, tender, and completely satisfying. The combination of condensed cream of chicken soup, sour cream, milk, butter, onion, and sharp cheddar creates a creamy sauce that surrounds every slice of potato.
And when that final layer of cheese melts into a golden topping—with a few crunchy breadcrumbs scattered over it if you like—you know dinner is going to be good.
It's easy enough for a weeknight but comforting enough for a holiday table.
And honestly, isn't that exactly what we want from a great casserole?
Simple ingredients.
Minimal fuss.
Maximum comfort.
If you make this creamy potato casserole, I'd love to hear how it turned out! Leave a review and share a photo of your finished dish on Pinterest so other home cooks can see your delicious creation, too.
