5 from 14 votes

The Ultimate Loaded Hashbrown Casserole Recipe

Name: Cheesy Hashbrown Casserole
Prep time: 25 min
Cook time: 35 min
Total time: 60 min
Ingredients: 30 oz frozen hash browns (thawed ); 6 strips bacon (chopped); 3 Tablespoons salted butter; 1 small onion (diced (about 1 cup)); ¼ cup all-purpose flour; 1 cup whole milk; 1 ¼ cups chicken broth; 1 teaspoon garlic powder; ½ teaspoon onion powder; ½ teaspoon ground mustard; ½ teaspoon salt; ½ teaspoon pepper; 3 oz cream cheese (cut into 6 pieces); 2 ½ cups shredded sharp cheddar cheese (divided); 1 cup shredded mozzarella cheese; ⅔ cup sour cream; 3 Tablespoons finely sliced green onions (optional)

By Sam MerrittPublished Dec 16, 2025

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33 Comments

Servings: 10 servings

1 hr

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A cheesy, loaded hashbrown casserole recipe made from scratch without canned soup or cream-of anything. Includes tips for making in advance and freezing–perfect for holidays or brunches!

Spoon scooping a serving of hashbrown casserole out of a dish.

A From Scratch Hashbrown Casserole Recipe

While you’ve probably had a hashbrown casserole before, this version earns the label of being the ultimate, loaded hashbrown casserole recipe.

It’s a comforting, cheesy shredded potato casserole amped up with crispy bacon, sautéed onions, and more. It works as a breakfast alongside sausage gravy and pancakes or a hearty holiday side dish on a plate beside maple glazed carrots.

Why You’ll Love This Recipe

No condensed soup! Instead, we’ll make our own version from scratch (we do this in my green bean casserole, too), and the recipe is all the better for it. Don’t let this scare you away–I promise it’s as easy as whisking some ingredients together!
Elevated classic. Simple swaps like cooking the onion in bacon grease, making the condensed soup from scratch, shredding our own cheeses, adding scallions, etc. all take this beloved classic to the next level.
Make-ahead friendly. Just like my mashed potato casserole, this dish is great for making in advance. Simply cover and refrigerate until needed, then thaw and bake. You can also freeze this hashbrown casserole recipe, making it perfect for holiday meal prepping!
Versatile. This recipe is just as tasty as a brunch recipe as it is a Thanksgiving side dish. The flavors pair well with any mealtime!

A From Scratch Hashbrown Casserole Recipe
Why You’ll Love This Recipe
Ingredients
How to Make Hashbrown Casserole From Scratch
Frequently Asked Questions
Related Recipes
Cheesy Hashbrown Casserole Recipe

Ingredients

Hashbrowns. You’ll need one 30 oz bag of frozen shredded hashbrowns. If you choose to use the diced hashbrown version (like for funeral ptoatoes!), those come in 32 oz bags; you can either add the extra 2 oz of potatoes or save them for another meal.
Shredded cheese. Including mozzarella and sharp cheddar. I really recommend shredding your own for the best melting, but you can always use pre-shredded in a pinch. Make sure you don’t dump all of your cheddar cheese in at once; we will be saving some for the top of the casserole!
Bacon. This isn’t a typical ingredient, but it adds a TON of flavor and really completes the loaded potato vibe we are going for. If you have extra bacon after making this recipe, put it towards my potato soup, BLT dip, chili recipe, or bacon jalapeno popper dip 😉
Spices. Including garlic powder, onion powder, ground mustard, and black pepper. Ground mustard might raise some eyebrows, but it is common in creamy/cheesy casseroles and soups, like my baked mac and cheese or broccoli cheddar soup.
Cream cheese & sour cream. I recommend full-fat versions of both. And for those of you who hate sour cream, I promise you won’t be able to detect the it in the final product.

Remember, this is just an overview of the ingredients I used and why. For the full recipe please scroll down to the bottom of the post!

SAM’S TIP: I highly recommend thawing your frozen hashbrowns before using them–more on this in the FAQ section below!

How to Make Hashbrown Casserole From Scratch

Overhead view of flour being stirred into diced onion cooking in a pot.

Step 1: Build a flavorful base. Start by cooking your bacon until crisp, then remove and drain most of the grease, leaving 1 ½ tablespoons. Add your butter to the pot, and once it’s melted, add the chopped onions. Cook until softened, then sprinkle the flour overtop and whisk until it forms a paste.

Overhead view of a whisk stirring a roux in a pot.

Step 2: Make a roux. Slowly pour in the milk while whisking, then add the broth, spices, and salt. Bring to a boil, then reduce the heat and let simmer until thickened, stirring frequently.

Overhead view of shredded cheese, cream cheese, and sour cream being stirred into a roux.

Step 3: Add the cheeses. Reduce the heat and add the mozzarella, sour cream, cream cheese, and just 2 cups of the cheddar (we’ll use that final cup later!).

Overhead view of thickened cheese sauce in a pot.

Step 4: Finish the sauce. Whisk in the cheeses and let everything melt until you have a smooth, cohesive sauce.

Overhead view of hash brown potatoes, bacon, and green onion being stirred into a cheese sauce.

Step 5: Add the potatoes, bacon, and onions. Fold in the bacon, scallions, and thawed hashbrowns until everything is combined.

Overhead view of a cheese topped casserole before baking.

Step 6: Top with cheese & bake. Pour the mixture into a buttered dish, then sprinkle the remaining cheddar cheese overtop. Bake until bubbly and melted, about 35 minutes.

SAM’S TIP: If you’d like to make your casserole in advance and bake later, simply cover and refrigerate before the baking step. When you’re ready to bake, remove the casserole from the fridge, uncover, and let sit for about 20 minutes at room temperature before baking as instructed.

Overhead view of a pan of casserole made with hash browns, cheese, bacon, and more.

Frequently Asked Questions

Do you have to thaw frozen hash browns for casserole?

For the easiest preparation, I really recommend you thaw your hashbrowns. You can either place them in the fridge the night before or pour them into a colander or large bowl and allow to sit at room temperature for 45-60 minutes. Whichever method you use, be sure to drain off any excess moisture before using.

Frozen hashbrowns will technically still work, but they will be more difficult to work with (mixing them in gets a bit stiff!)and you may need to increase the cook time.

How do I know when my hashbrown casserole is done?

The cheese will be melty and will have some nice golden browning happening all over. You should also see some bubbling around the edges of the pan.

Is hashbrown casserole the same as funeral potatoes?

Pretty much! The only difference is that funeral potatoes are often made with diced potatoes instead of shredded and they sometimes have a buttery cornflake topping (which sounds amazing).

My hashbrown casserole recipe switches things up a little bit more by starting with a bacon base and replacing the condensed soup with a homemade version. But feel free to consider it a funeral potatoes recipe!

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Breakfast Casserole

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Overnight Cinnamon Rolls

Do you typically serve hashbrown casserole for breakfast, or do you serve it as a holiday side dish? Let me know in the comments!

Enjoy!

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I originally published this recipe in 2018, I’ve since updated the post to include new photos and a few minor tweaks (a smidge more bacon and a little less cheese).