Cheesy

Cheesy Hashbrown Casserole

Name: Cheesy Hashbrown Casserole
Prep time: 20 min
Cook time: 35 min
Total time: 55 min
Yield: 6 servings
Ingredients: 2 lbs (900g) frozen hashbrowns, thawed; 1/2 cup (115g) unsalted butter, melted; 1 medium onion, diced; 2 cloves garlic, minced; 1 cup (115g) all-purpose flour; 2 cups (475ml) milk; 2 cups (220g) shredded cheddar cheese; 1/2 cup (55g) grated Parmesan cheese; 1/2 cup (60g) panko breadcrumbs; Salt and pepper to taste; 2 tbsp (30g) olive oil; 1 tsp (5g) dried thyme

By Carol Bennett · June 18, 2026 · Cheesy

Prep20 min

Cook35 min

Total55 min

Serves6

I still remember the first time I made a cheesy hashbrown casserole for my family. It was a cold winter evening, and we were all craving something comforting and warm. I had all the ingredients on hand, so I decided to give it a try. The result was a golden, cheesy, and utterly irresistible dish that quickly became a family favorite.

As a home cook, I love one-dish casseroles like this one because they're easy to prepare, feed a crowd, and are perfect for busy weeknights or special occasions. The best part? This casserole is incredibly versatile, so feel free to customize it to your taste with your favorite ingredients.

What makes this recipe special is the combination of crispy, golden hashbrowns, a creamy cheese sauce, and a crunchy breadcrumb topping. It's a match made in heaven, and I just know you'll love it as much as we do. Whether you're a beginner cook or a seasoned pro, this recipe is sure to become a staple in your household.

I often make this casserole for family dinners, potlucks, or cozy nights in with friends. It's the perfect dish to serve a crowd, and it's sure to be a hit with both kids and adults. So go ahead, give it a try, and watch it disappear in no time!

So, what are you waiting for? Let's get started and make some delicious memories with this incredible cheesy hashbrown casserole recipe. I'll guide you through every step, from prep to finish, and share some helpful tips and tricks along the way.

Why You’ll Love This Recipe

This recipe is incredibly easy to make, requiring just a few simple ingredients and minimal prep time.
It's a crowd-pleaser, perfect for family dinners, potlucks, or cozy nights in with friends.
The casserole is highly customizable, so feel free to add your favorite ingredients or substitutions to make it your own.
It's a budget-friendly option, using affordable ingredients that won't break the bank.
The dish is perfect for make-ahead meals, as it can be prepared in advance and refrigerated or frozen until needed.
It's a great way to use up leftover ingredients, reducing food waste and saving you money.
The casserole is a comforting, satisfying meal that's sure to become a staple in your household.

Why This Recipe Works

The key to a great cheesy hashbrown casserole is balance. You want a crispy, golden crust on top, a creamy cheese sauce in the middle, and a layer of tender hashbrowns on the bottom. To achieve this, it's essential to cook the hashbrowns until they're golden and crispy, then top them with a cheese sauce that's been cooked to the perfect consistency.

Another crucial element is the layering of ingredients. By starting with a layer of hashbrowns, followed by a layer of cheese sauce, and finishing with a crunchy breadcrumb topping, you create a dish that's both visually appealing and texturally interesting. This layering also helps to prevent the casserole from becoming too soggy or dry, ensuring that each bite is perfectly balanced.

Finally, the type of cheese you use is vital. A combination of cheddar and Parmesan provides a rich, creamy flavor that complements the hashbrowns perfectly. By using a mix of cheeses, you add depth and complexity to the dish, making it even more enjoyable to eat.

Ingredients You’ll Need

When it comes to making a cheesy hashbrown casserole, the ingredients are just as important as the technique. You'll need a mix of pantry staples, such as flour, butter, and cheese, as well as some fresh ingredients like hashbrowns and onions. Be sure to choose high-quality ingredients, as they'll make a big difference in the final dish.

One of the key players in this recipe is the hashbrowns. You can use either frozen or fresh hashbrowns, depending on your preference. If using frozen, be sure to thaw them first and squeeze out any excess moisture. For fresh hashbrowns, simply peel and grate the potatoes, then squeeze out any excess moisture using a paper towel or clean kitchen towel.

2 lbs (900g) frozen hashbrowns, thawedYou can also use fresh hashbrowns, peeled and grated, with excess moisture squeezed out using a paper towel or clean kitchen towel. If using frozen, be sure to thaw them first and squeeze out any excess moisture.
1/2 cup (115g) unsalted butter, meltedYou can also use salted butter, but be sure to adjust the amount of salt you add to the recipe accordingly. Melted butter helps to create a crispy, golden crust on the hashbrowns.
1 medium onion, dicedYou can use either a yellow or white onion, depending on your preference. Be sure to dice the onion finely, as this will help it cook evenly and prevent it from overpowering the other ingredients.
2 cloves garlic, mincedYou can use either fresh or jarred garlic, depending on your preference. Be sure to mince the garlic finely, as this will help it distribute evenly throughout the dish.
1 cup (115g) all-purpose flourYou can also use whole wheat flour or a combination of all-purpose and whole wheat flour, depending on your preference. The flour helps to thicken the cheese sauce and create a crispy crust on the hashbrowns.
2 cups (475ml) milkYou can use either whole, low-fat, or non-fat milk, depending on your preference. The milk helps to create a creamy, cheesy sauce that complements the hashbrowns perfectly.
2 cups (220g) shredded cheddar cheeseYou can also use a combination of cheddar and other cheeses, such as Parmesan or mozzarella, depending on your preference. The cheese helps to create a rich, creamy sauce that's sure to please even the pickiest eaters.
1/2 cup (55g) grated Parmesan cheeseYou can also use other hard cheeses, such as Asiago or Romano, depending on your preference. The Parmesan cheese adds a salty, nutty flavor that complements the hashbrowns perfectly.
1/2 cup (60g) panko breadcrumbsYou can also use regular breadcrumbs or crushed crackers, depending on your preference. The panko breadcrumbs help to create a crunchy, golden crust on top of the casserole.
Salt and pepper to tasteBe sure to taste the dish as you go and adjust the seasoning accordingly. You can also add other seasonings, such as dried herbs or spices, to give the dish extra flavor.
2 tbsp (30g) olive oilYou can also use other oils, such as avocado or grapeseed, depending on your preference. The olive oil helps to create a crispy, golden crust on the hashbrowns and adds a rich, fruity flavor to the dish.
1 tsp (5g) dried thymeYou can also use other herbs, such as rosemary or parsley, depending on your preference. The thyme adds a savory, slightly bitter flavor that complements the hashbrowns perfectly.

Ingredients for Cheesy Hashbrown Casserole

Equipment You’ll Need

Large bowl9x13 inch baking dishCheese graterMeasuring cups and spoonsWhiskWooden spoonOven

How to Make Cheesy Hashbrown Casserole

1
Preheat your oven to 375°F (190°C).
2
In a large bowl, combine the thawed hashbrowns, melted butter, diced onion, minced garlic, salt, and pepper. Mix well to combine, making sure the hashbrowns are evenly coated with the butter and seasonings.
3
Transfer the hashbrown mixture to a 9x13 inch baking dish and spread it out in an even layer.
4
In a medium saucepan, whisk together the flour and milk until smooth. Cook over medium heat, whisking constantly, until the mixture thickens and comes to a boil.
5
Remove the sauce from the heat and stir in the shredded cheddar cheese and grated Parmesan cheese until melted and smooth.
6
Pour the cheese sauce over the hashbrown mixture in the baking dish, making sure to cover the entire surface.
7
Sprinkle the panko breadcrumbs over the top of the casserole, followed by a drizzle of olive oil and a sprinkle of dried thyme.
8
Bake the casserole in the preheated oven for 35-40 minutes, or until the top is golden brown and the casserole is hot and bubbly.
9
Remove the casserole from the oven and let it rest for 10-15 minutes before serving.
10
Serve the casserole hot, garnished with chopped fresh herbs or a sprinkle of grated cheese, if desired.
11
Leftovers can be refrigerated for up to 3 days or frozen for up to 2 months. Reheat the casserole in the oven or microwave until hot and bubbly.

Expert Tips

To ensure the hashbrowns are crispy, make sure to squeeze out as much moisture as possible before baking.
If using frozen hashbrowns, be sure to thaw them first and squeeze out any excess moisture.
To prevent the casserole from becoming too soggy, make sure to cook the hashbrowns until they're golden and crispy before adding the cheese sauce.
You can customize the casserole to your taste by adding other ingredients, such as diced ham or cooked vegetables.
To make the casserole ahead of time, prepare the hashbrown mixture and cheese sauce, then assemble and bake the casserole just before serving.
To freeze the casserole, assemble the dish, then cover it with plastic wrap or aluminum foil and freeze until solid. Thaw and bake as directed.
To reheat the casserole, bake it in the oven at 350°F (180°C) for 20-25 minutes, or until hot and bubbly.
You can also make individual servings of the casserole by dividing the hashbrown mixture and cheese sauce among ramekins or small baking dishes.

Common Mistakes to Avoid

Not squeezing out enough moisture from the hashbrowns, resulting in a soggy casserole.
Not cooking the hashbrowns until they're golden and crispy, resulting in a casserole that's not crunchy on top.
Not using enough cheese sauce, resulting in a casserole that's dry and flavorless.
Not letting the casserole rest before serving, resulting in a casserole that's not set and is difficult to serve.
Not reheating the casserole properly, resulting in a casserole that's not hot and bubbly.
Not using the right type of cheese, resulting in a casserole that's not creamy and flavorful.

Variations and Substitutions

Add diced ham or cooked bacon to the hashbrown mixture for a smoky, savory flavor.
Use different types of cheese, such as mozzarella or feta, to create a unique flavor profile.
Add cooked vegetables, such as broccoli or bell peppers, to the hashbrown mixture for added nutrition and flavor.
Use gluten-free flour to make the casserole gluten-free.
Add a sprinkle of paprika or dried herbs to the top of the casserole for extra flavor and color.
Use leftover mashed potatoes instead of hashbrowns for a creamy, comforting casserole.
Add a layer of caramelized onions or sautéed mushrooms to the casserole for added depth of flavor.

What to Serve With Cheesy Hashbrown Casserole

This cheesy hashbrown casserole is perfect for serving at family dinners, potlucks, or cozy nights in with friends. It's a comforting, satisfying meal that's sure to please even the pickiest eaters. Serve it alongside a simple green salad, a bowl of soup, or a side of roasted vegetables for a well-rounded meal.

Some other ideas for serving this casserole include:

Serve with a simple green saladServe with a bowl of soupServe with a side of roasted vegetablesServe with a side of garlic breadServe with a side of mashed potatoesServe with a side of grilled chicken or steak

Make-Ahead, Storage, Freezing and Reheating

This casserole can be made ahead of time and refrigerated or frozen until needed. To refrigerate, assemble the casserole, then cover it with plastic wrap or aluminum foil and refrigerate for up to 3 days. To freeze, assemble the casserole, then cover it with plastic wrap or aluminum foil and freeze until solid. Thaw and bake as directed.

To reheat the casserole, bake it in the oven at 350°F (180°C) for 20-25 minutes, or until hot and bubbly. You can also reheat it in the microwave, but be careful not to overheat, as this can cause the casserole to dry out.

Leftover casserole can be refrigerated for up to 3 days or frozen for up to 2 months. To freeze, divide the leftover casserole among airtight containers or freezer bags, then freeze until solid. Thaw and reheat as directed.

Frequently Asked Questions

Can I make this casserole ahead of time?

Yes, you can make this casserole ahead of time and refrigerate or freeze it until needed. Simply assemble the casserole, then cover it with plastic wrap or aluminum foil and refrigerate for up to 3 days or freeze until solid. Thaw and bake as directed.

Can I use frozen hashbrowns?

Yes, you can use frozen hashbrowns. Simply thaw them first and squeeze out any excess moisture before using.

Can I customize this casserole to my taste?

Yes, you can customize this casserole to your taste by adding other ingredients, such as diced ham or cooked vegetables. Feel free to get creative and make it your own!

How do I reheat this casserole?

To reheat this casserole, bake it in the oven at 350°F (180°C) for 20-25 minutes, or until hot and bubbly. You can also reheat it in the microwave, but be careful not to overheat, as this can cause the casserole to dry out.

Can I freeze this casserole?

Yes, you can freeze this casserole. Simply assemble the casserole, then cover it with plastic wrap or aluminum foil and freeze until solid. Thaw and bake as directed.

How long does this casserole last in the fridge?

This casserole will last for up to 3 days in the fridge. Simply cover it with plastic wrap or aluminum foil and refrigerate until needed.

Can I make individual servings of this casserole?

Yes, you can make individual servings of this casserole by dividing the hashbrown mixture and cheese sauce among ramekins or small baking dishes. Bake as directed, then serve and enjoy!

What type of cheese is best for this casserole?

A combination of cheddar and Parmesan cheese is best for this casserole. The cheddar cheese adds a rich, creamy flavor, while the Parmesan cheese adds a salty, nutty flavor.

The Full Recipe

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