Every holiday table in America seems to have a version of this casserole, and there is a reason it never gets retired: frozen hash browns folded into a creamy cheddar sauce, baked until bubbling, under a buttery cornflake top that stays genuinely crunchy. It is the dish that empties first at brunch and the one people ask you to bring again, with eggs, with ham, with anything.
We file it in our Breakfast collection with the other crowd bakes like our Easy Sausage Breakfast Casserole, because it does the same generous job — one dish, ten servings, assembly the night before if you want it. In the morning you add the topping and put it in the oven, and breakfast handles itself while the coffee brews.
The details that lift this version are small but real. The hash browns must be fully thawed and patted dry, or the sauce thins into soup as they release water in the oven. The cornflakes get their butter separately and go on only for the bake, never mixed into the filling. And a spoonful of mustard and a pinch of garlic powder in the sauce keep a very rich dish tasting seasoned rather than heavy.
Thaw and dry the potatoes properly
A bag of frozen hash browns holds a surprising amount of ice, and every spoonful of it ends up in your sauce. Thaw the bag overnight in the refrigerator, then spread the shreds on a clean tea towel, roll it up and squeeze firmly — you will wring out far more liquid than you expect. If you forgot the overnight thaw, spread the frozen shreds on a tray at room temperature for about an hour, then towel-dry the same way. Skipping this step is the single reason this casserole sometimes comes out watery.
Build the sauce in the mixing bowl, not the stove
Older versions of this casserole melt butter and canned soup together on the stove, but a cold-mixed sauce works just as well and saves a pan. Sour cream, cream of chicken soup, melted butter and sharp cheddar whisk together in minutes, and the oven does the marrying. The one rule: the butter must be melted but not hot, or it can thin the sour cream and leave the sauce greasy. Let it cool for two minutes after melting before it joins the bowl.
Ingredients
- 1 (30 oz) bag frozen shredded hash browns (850 g), thawed and dried
- 1 (10.5 oz) can cream of chicken soup (298 g)
- 1 cup sour cream (240 g)
- 1/2 cup unsalted butter (113 g), melted and slightly cooled, divided
- 1 small yellow onion (120 g), finely diced
- 2 cups shredded sharp cheddar cheese (224 g)
- 1 teaspoon Dijon mustard (5 ml)
- 1/2 teaspoon garlic powder (1.5 g)
- 1 teaspoon kosher salt (6 g)
- 1/2 teaspoon black pepper (1.5 g)
- 2 cups cornflakes (60 g), lightly crushed
- 2 tablespoons sliced green onions (12 g), to serve, optional
Amounts are for the yield below. US customary measures first, grams in brackets for scale users.
Step-by-step instructions
- Heat the oven and dry the potatoes. Heat the oven to 350°F (177°C) and lightly grease a 9x13 inch (23x33 cm) baking dish. Thaw the hash browns if you have not already, spread them on a clean tea towel, roll it up and squeeze out as much liquid as you can. Dry potatoes are what keep the finished sauce thick and creamy.
- Mix the sauce and filling. In a large bowl, whisk the cream of chicken soup, sour cream, half the melted butter, the mustard, garlic powder, salt and pepper until smooth. Fold in the onion, cheddar and the dried hash browns until every shred is coated. Hands work better than a spoon here for breaking up clumps without shredding the potatoes further.
- Fill the dish. Spread the mixture evenly in the prepared dish, pressing it gently into the corners. Do not pack it down hard — a lightly settled filling bakes up fluffy, while a compressed one turns dense. If you are assembling ahead, stop here, cover and refrigerate for up to 24 hours.
- Add the crunchy top. Toss the lightly crushed cornflakes with the remaining melted butter until evenly coated, then scatter them over the casserole in an even layer. Crush the flakes only lightly — you want rubble, not dust, so the topping keeps its crunch after baking.
- Bake until bubbling and gold. Bake uncovered for 45 to 55 minutes, until the topping is deep gold, the edges are bubbling steadily and the centre is hot all the way through, reading at least 165°F (74°C). A refrigerated casserole needs the longer end of the range. If the top browns early, cover loosely with foil for the remaining time.
- Rest and serve. Rest for 10 minutes before serving so the sauce thickens and scoops hold their shape. Scatter with green onions if you like, and serve warm alongside eggs, ham or a big fruit salad.
Nutrition estimate
| Nutrient | Per serving |
|---|---|
| Calories | 340 kcal |
| Protein | 8 g |
| Carbohydrates | 26 g |
| Fat | 23 g |
| Saturated fat | 13 g |
| Sodium | 720 mg |
| Fiber | 2 g |
| Sugar | 3 g |
Nutrition figures are estimates calculated from standard ingredient data for the yield stated. Your actual values will vary with brands, substitutions and portion sizes — treat them as a guide, not a guarantee.
Storage & reheating
Leftovers keep for up to 4 days in an airtight container in the refrigerator. Reheat portions in a 350°F (177°C) oven for 12 to 15 minutes to revive the topping — the microwave softens the cornflakes, though the casserole still tastes good. The unbaked filling, without the topping, freezes for up to 2 months; thaw overnight in the refrigerator, add fresh buttered cornflakes, and bake as directed. Nutrition figures are estimates from standard ingredient data and vary with brands and substitutions.
Easy Cheesy Hash Brown Casserole
Creamy, cheesy potatoes with a crunchy top — feeds a crowd, no fuss.
Ingredients
Tick ingredients off as you prep, and tap a step below to mark it done as you cook. Scaling adjusts the listed amounts - seasoning to taste stays your call.
Instructions
- Heat the oven and dry the potatoes. Heat the oven to 350°F (177°C) and lightly grease a 9x13 inch (23x33 cm) baking dish. Thaw the hash browns if you have not already, spread them on a clean tea towel, roll it up and squeeze out as much liquid as you can. Dry potatoes are what keep the finished sauce thick and creamy.
- Mix the sauce and filling. In a large bowl, whisk the cream of chicken soup, sour cream, half the melted butter, the mustard, garlic powder, salt and pepper until smooth. Fold in the onion, cheddar and the dried hash browns until every shred is coated. Hands work better than a spoon here for breaking up clumps without shredding the potatoes further.
- Fill the dish. Spread the mixture evenly in the prepared dish, pressing it gently into the corners. Do not pack it down hard — a lightly settled filling bakes up fluffy, while a compressed one turns dense. If you are assembling ahead, stop here, cover and refrigerate for up to 24 hours.
- Add the crunchy top. Toss the lightly crushed cornflakes with the remaining melted butter until evenly coated, then scatter them over the casserole in an even layer. Crush the flakes only lightly — you want rubble, not dust, so the topping keeps its crunch after baking.
- Bake until bubbling and gold. Bake uncovered for 45 to 55 minutes, until the topping is deep gold, the edges are bubbling steadily and the centre is hot all the way through, reading at least 165°F (74°C). A refrigerated casserole needs the longer end of the range. If the top browns early, cover loosely with foil for the remaining time.
- Rest and serve. Rest for 10 minutes before serving so the sauce thickens and scoops hold their shape. Scatter with green onions if you like, and serve warm alongside eggs, ham or a big fruit salad.
Recipe by Ahsan ul Haq · FryDaily. Printing? This card is designed to print cleanly on its own.
