This Casserole With Shredded Potatoes is the kind of dish that earns a permanent spot in your weeknight rotation. Frozen shredded hash browns get folded into a rich, tangy sour cream and cheddar custard, poured into a single baking dish, and baked until the edges bubble and the top turns deeply golden. It is creamy underneath, crisp at the corners, and almost impossible to stop eating.
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The magic is in the ratio. Two cups of sharp cheddar and a full cup of sour cream give the potatoes a velvety body without turning them soupy, while a small amount of melted butter and a beaten egg help the casserole set so it slices cleanly instead of collapsing on the plate. A handful of diced onion and a pinch of nutmeg add a subtle depth you cannot quite name but definitely miss when it is gone.
Serve it as a side next to roast chicken, ham, or meatloaf, or bulk it up with ham or sausage and call it dinner. It also holds beautifully for potlucks because it stays warm and scoopable for a good 30 minutes after it leaves the oven.
Why You'll Love This Recipe
About the Ingredients
6 cups (about 1 lb 10 oz / 740g) frozen shredded hash brown potatoes, thawed
Thaw completely and squeeze dry with paper towels, or the casserole will turn watery. If you only have refrigerated shredded potatoes, use them straight from the bag and skip the squeezing.
1 cup (240g) full-fat sour cream
Full-fat is essential here because low-fat sour cream separates and turns grainy under heat. Greek yogurt (whole milk) works as a one-to-one swap with a slightly tangier result.
2 cups (about 8 oz / 225g) sharp cheddar cheese, freshly shredded
Shred it yourself from a block; pre-shredded cheese is coated in starch and melts less smoothly. Gruyère or Monterey Jack are excellent substitutes if you want a milder melt.
1 can (10.5 oz / 298g) condensed cream of chicken soup
This is the binder that keeps everything moist. Use cream of celery or cream of mushroom for a vegetarian version, or a homemade white sauce if you avoid canned soups.
1/2 cup (1 stick / 113g) unsalted butter, melted and slightly cooled
Cool it for 5 minutes before mixing so it does not cook the egg. Salted butter works too, but then cut the added salt to a pinch.
1 large egg, lightly beaten
The egg is what makes the casserole sliceable rather than spoonable. For an egg-free version, whisk 2 tablespoons of cornstarch into the sour cream instead.
1 small yellow onion, finely diced (about 3/4 cup / 110g)
Yellow onion gives the sweetest, most mellow flavor after baking. If you are short on time, 1 teaspoon of onion powder is a fine stand-in.
1 teaspoon garlic powder
Granulated garlic blends more evenly than fresh here. Use 2 cloves of minced fresh garlic if you prefer a sharper bite.
1 teaspoon kosher salt
Kosher salt flakes season more evenly than fine table salt. If using table salt, reduce to 3/4 teaspoon.
1/2 teaspoon freshly ground black pepper
Fresh-cracked pepper is noticeably more aromatic than pre-ground. Add a pinch of cayenne for gentle heat if you like.
1/4 teaspoon ground nutmeg
A tiny amount rounds out the dairy flavors without tasting like dessert. Skip it if you are strongly averse, but it is the quiet secret here.
1 cup (about 4 oz / 113g) crushed cornflakes or panko, tossed with 2 tablespoons melted butter
This topping is what turns golden and crunchy in the oven. Crushed potato chips or buttered fresh breadcrumbs work just as well.
Tips & Tricks
Do not overbake past the set point
The casserole is done when the center registers 165°F (74°C) and no longer jiggles. Beyond that, the custard breaks and the potatoes turn gluey, so start checking at the 35-minute mark.
Let it rest before serving
A 10-minute rest allows the egg and sour cream to finish setting, so slices hold their shape. Cutting immediately gives you a loose, runny scoop instead of clean squares.
Season in layers, not at the end
Salt the potato mixture before baking, because you cannot stir seasoning through a set casserole afterward. Taste the raw mixture (it is egg-containing, so spit it out) to check the salt level.
- Thaw and drain the hash browns completely: Excess ice crystals are the number one cause of a watery casserole. Let the bag thaw overnight in the fridge, then press the potatoes between layers of paper towels until they feel dry to the touch.
Pro Tips
Step-by-Step Instructions
1. Preheat and prep
Heat the oven to 350°F (175°C) and butter a 9×13-inch baking dish all the way up the sides. Thaw the hash browns completely and squeeze them dry in a clean kitchen towel or paper towels.
2. Mix the custard
In a large bowl, whisk the sour cream, condensed soup, melted butter, egg, garlic powder, salt, pepper, and nutmeg until completely smooth, about 1 minute. The mixture should look like a thick, glossy sauce with no streaks of egg.
3. Fold in potatoes and cheese
Add the dried hash browns, diced onion, and 1 1/2 cups of the shredded cheddar to the bowl. Fold gently with a spatula until every shred is coated, then spread evenly in the prepared dish.
4. Add the topping
Scatter the remaining 1/2 cup cheddar over the surface, then sprinkle the buttered cornflakes or panko in an even layer. Press down lightly so the topping adheres to the custard.
5. Bake until golden
Bake uncovered at 350°F (175°C) for 35 to 40 minutes, until the edges are bubbling and the top is deep golden brown. The center should register 165°F (74°C) on an instant-read thermometer and feel set, not jiggly, when you nudge the dish.
6. Rest before serving
Remove from the oven and let the casserole rest on a wire rack for 10 minutes. This allows the custard to finish setting so portions lift out cleanly with a spatula.
Delicious Variations
Ham and Swiss Bake
Fold 2 cups diced ham and swap the cheddar for shredded Swiss cheese, then add 1 teaspoon Dijon mustard to the custard for a cordon bleu flavor.
Loaded Baked Potato Style
Stir in 8 slices of crumbled cooked bacon, replace the onion with 4 sliced scallions, and finish with a drizzle of sour cream and extra chives after baking.
Green Chile and Jack
Add one 4-ounce can of diced green chiles and use pepper Jack cheese in place of cheddar for a mildly spicy Southwestern spin.
How to Store Casserole With Shredded Potatoes
Refrigerator
Cover tightly with foil or transfer to an airtight container and refrigerate for up to 4 days. Let it cool to room temperature within 2 hours before chilling.
Freezer
Freeze baked and cooled portions in airtight containers for up to 2 months. For best texture, freeze before baking: assemble, cover, and freeze unbaked for up to 3 months, then thaw overnight in the fridge before baking.
Reheating
Reheat covered with foil at 325°F (165°C) for 15 to 20 minutes, or microwave single portions on high for 90 seconds. Uncover for the last 5 minutes of oven reheating to re-crisp the topping.
Frequently Asked Questions
Q: Can I make this casserole ahead of time?
Yes, you can assemble it up to 24 hours in advance and refrigerate it covered. Add 10 to 15 extra minutes to the bake time since it goes into the oven cold, and do not add the cornflake topping until just before baking so it stays crisp.
Q: Why is my hash brown casserole watery?
The most common cause is frozen hash browns that were not fully thawed and drained. Ice releases water as it bakes, so thaw the potatoes overnight in the fridge and squeeze them dry in a towel before mixing.
Q: Can I use fresh potatoes instead of frozen hash browns?
Yes, but you must shred and wring them out thoroughly. Grate about 2 pounds of russet potatoes, squeeze the shreds in a clean towel until no more liquid drips out, and use them immediately to prevent browning.
Q: What temperature should the casserole reach to be done?
The center should hit 165°F (74°C) on an instant-read thermometer. At that point the egg is fully cooked and the custard is set, while the potatoes remain creamy rather than dry.
Q: Can I leave out the cream of chicken soup?
Absolutely. Replace it with 1 cup of homemade white sauce or a can of cream of mushroom or cream of celery soup. If you use a homemade sauce, add an extra 1/2 teaspoon of salt since canned soups are already seasoned.
Grab a bag of frozen hash browns and a block of sharp cheddar, and this creamy, golden-topped casserole can be in your oven tonight. Bake it once, and it will become the dish your family requests at every holiday and potluck. If you make it, leave a comment and tell me which variation you tried.
Casserole With Shredded Potatoes
Casserole With Shredded Potatoes bakes into a creamy, cheesy, golden-topped comfort dish that feeds six and uses one pan for easy cleanup.
🧂 Ingredients
- 6 cups (about 1 lb 10 oz / 740g) frozen shredded hash brown potatoes, thawed
- 1 cup (240g) full-fat sour cream
- 2 cups (about 8 oz / 225g) sharp cheddar cheese, freshly shredded
- 1 can (10.5 oz / 298g) condensed cream of chicken soup
- 1/2 cup (1 stick / 113g) unsalted butter, melted and slightly cooled
- 1 large egg, lightly beaten
- 1 small yellow onion, finely diced (about 3/4 cup / 110g)
- 1 teaspoon garlic powder
- 1 teaspoon kosher salt
- 1/2 teaspoon freshly ground black pepper
- 1/4 teaspoon ground nutmeg
- 1 cup (about 4 oz / 113g) crushed cornflakes or panko, tossed with 2 tablespoons melted butter
📋 Instructions
- 1Preheat and prep — Heat the oven to 350°F (175°C) and butter a 9×13-inch baking dish all the way up the sides. Thaw the hash browns completely and squeeze them dry in a clean kitchen towel or paper towels.
- 2Mix the custard — In a large bowl, whisk the sour cream, condensed soup, melted butter, egg, garlic powder, salt, pepper, and nutmeg until completely smooth, about 1 minute. The mixture should look like a thick, glossy sauce with no streaks of egg.
- 3Fold in potatoes and cheese — Add the dried hash browns, diced onion, and 1 1/2 cups of the shredded cheddar to the bowl. Fold gently with a spatula until every shred is coated, then spread evenly in the prepared dish.
- 4Add the topping — Scatter the remaining 1/2 cup cheddar over the surface, then sprinkle the buttered cornflakes or panko in an even layer. Press down lightly so the topping adheres to the custard.
- 5Bake until golden — Bake uncovered at 350°F (175°C) for 35 to 40 minutes, until the edges are bubbling and the top is deep golden brown. The center should register 165°F (74°C) on an instant-read thermometer and feel set, not jiggly, when you nudge the dish.
- 6Rest before serving — Remove from the oven and let the casserole rest on a wire rack for 10 minutes. This allows the custard to finish setting so portions lift out cleanly with a spatula.
