Cheesy Hash Brown Breakfast Casserole 🥔🧀🍳

An Easy, Hearty Southern Breakfast Recipe the Whole Family Will Love!

Y'all, is there anything better than waking up to the smell of a good, old-fashioned homemade breakfast? ❤️

I'm talking about the kind of breakfast that brings everybody wandering into the kitchen before you've even hollered, "Breakfast is ready!"

Well, grab your favorite baking dish, because today we're making Cheesy Hash Brown Breakfast Casserole!

And y'all… this one is a KEEPER! 🙌

We're talking golden hash browns, savory breakfast sausage, fluffy eggs, and plenty of melted cheddar cheese, all baked together into one delicious, comforting casserole.

It's hearty, cheesy, filling, and perfect for feeding a hungry family without standing over the stove flipping pancakes or frying eggs one plate at a time.

And the best part?

You can prepare it ahead of time and bake it when you're ready!

Around Johnson Heirloom, mornings usually start with a cup of coffee, a to-do list that's already longer than it should be, and about a hundred things waiting for my attention. 😂☕

Between quilting, embroidery, cutting fabric, packing orders, and keeping up with the everyday chaos of running a handmade business, I LOVE recipes that make life a little easier.

And this casserole does exactly that!

Whether you're planning a lazy Sunday breakfast, hosting family for the holidays, preparing brunch for friends, or just trying to get everybody fed before the day gets away from you, this recipe has you covered.

So pour yourself another cup of coffee, preheat that oven, and let's get cooking, y'all! ❤️

🥔 Cheesy Hash Brown Breakfast Casserole Recipe

Prep Time: 15 minutes
Cook Time: 45–55 minutes
Total Time: Approximately 1 hour 10 minutes
Servings: 8–10
Difficulty: Easy
Cooking Method: Oven-Baked

🛒 Ingredients

For the Casserole:

• 1 bag (20 ounces) frozen shredded hash browns, thawed

• 1 pound breakfast sausage, mild or hot

• 8 large eggs

• 1 cup whole milk

• 2 cups shredded sharp cheddar cheese, divided

• ½ cup sour cream

• ½ cup finely diced onion

• ½ cup diced bell pepper (optional)

• ½ teaspoon garlic powder

• ½ teaspoon onion powder

• ½ teaspoon paprika

• ½ teaspoon black pepper

• ¼ teaspoon salt, or to taste

• 2 tablespoons melted butter

• Nonstick cooking spray or butter for greasing the baking dish

Optional Add-Ins:

• Cooked, crumbled bacon

• Diced ham

• Sliced green onions

• Diced jalapeños

• Pepper Jack cheese

• Sautéed mushrooms

• Chopped spinach

Kitchen Supplies:

• 9 × 13-inch baking dish

• Large skillet

• Large mixing bowl

• Whisk

• Spatula

• Measuring cups and spoons

Grandma's Tip: Shredding your own cheddar cheese makes for an extra creamy, melty casserole. Pre-shredded cheese works just fine, but freshly shredded cheese melts beautifully!

👩🍳 Step-by-Step Instructions

Step 1: Preheat Your Oven

Preheat your oven to 375°F (190°C).

Lightly grease a 9 × 13-inch baking dish with butter or nonstick cooking spray.

Set aside.

If your hash browns are still frozen, allow them to thaw in the refrigerator before assembling the casserole.

Pat away excess moisture with paper towels if needed.

Helpful Tip: Removing extra moisture from the hash browns helps prevent your casserole from becoming watery.

Step 2: Cook the Breakfast Sausage

In a large skillet over medium heat, cook the breakfast sausage, breaking it into small crumbles with a spatula.

Cook for approximately 7–10 minutes, or until the sausage is browned and fully cooked.

Add the diced onion and bell pepper during the last few minutes of cooking, allowing them to soften.

Drain away any excess grease.

Set aside to cool slightly.

Y'all, this is usually the point where everybody starts asking what's cooking because the kitchen already smells AMAZING! 😂

Step 3: Prepare the Hash Brown Layer

Place the thawed hash browns in a large mixing bowl.

Drizzle with the melted butter and gently toss to coat.

Spread the hash browns evenly across the bottom of your prepared baking dish.

You can lightly season them with a pinch of black pepper if desired.

Optional Extra-Crispy Tip: For a firmer, lightly golden hash brown base, bake the hash browns by themselves for 10–15 minutes before adding the remaining ingredients.

This step is optional, but it adds a delicious texture!

Step 4: Add the Sausage & Cheese

Spread the cooked breakfast sausage, onions, and peppers evenly over the hash browns.

Sprinkle 1½ cups of shredded cheddar cheese over the sausage mixture.

Save the remaining ½ cup of cheese for the top.

Because y'all know there's no such thing as too much cheese in a good breakfast casserole! 🧀😂

Step 5: Mix the Egg Filling

In a large mixing bowl, whisk together:

• 8 large eggs

• 1 cup whole milk

• ½ cup sour cream

• Garlic powder

• Onion powder

• Paprika

• Black pepper

• Salt

Whisk until the eggs are completely blended and the sour cream is well incorporated.

The sour cream adds a little extra richness and helps give the casserole a tender, creamy texture.

Step 6: Pour Everything Together

Slowly pour the egg mixture evenly over the hash browns, sausage, and cheese.

Use a spatula to gently press down any raised areas so the egg mixture can settle throughout the casserole.

Sprinkle the remaining ½ cup of cheddar cheese evenly over the top.

And just like that, your casserole is ready for the oven!

Step 7: Bake Until Golden & Delicious

Place the baking dish on the center rack of your preheated oven.

Bake uncovered for approximately 45–55 minutes, or until the center is set and the top is beautifully golden.

A knife inserted near the center should come out without liquid egg mixture, and the casserole should reach 160°F in the center.

If the cheese begins browning too quickly, loosely cover the dish with aluminum foil during the final portion of baking.

Kitchen Tip: Every oven is a little different, so start checking your casserole around the 45-minute mark.

Step 8: Let It Rest & Serve!

Remove the casserole from the oven and allow it to rest for approximately 5–10 minutes before slicing.

This helps everything set up nicely and makes serving much easier.

Cut into squares and serve warm.

Top with sliced green onions, a little extra cheese, or your favorite hot sauce if desired.

And there you have it, y'all…

A big, beautiful pan of cheesy, hearty Southern breakfast goodness! 🥔🧀🍳❤️

❤️ Tips for the BEST Cheesy Hash Brown Breakfast Casserole

1. Thaw Your Hash Browns

Using thawed hash browns helps everything cook evenly and prevents excess moisture from watering down the casserole.

2. Drain the Sausage Well

Nobody wants a greasy breakfast casserole!

After browning your sausage, drain away excess grease before adding it to the baking dish.

3. Use Sharp Cheddar Cheese

Sharp cheddar adds a rich, bold flavor that pairs beautifully with the potatoes and sausage.

You can also mix cheddar with Monterey Jack or Colby Jack.

4. Don't Overbake

The eggs should be fully set, but overbaking can make the casserole dry.

Check the center for doneness rather than relying on the appearance of the edges.

5. Let the Casserole Rest

Those few minutes of resting make a big difference!

The casserole will hold together better when sliced.

6. Customize It!

One of the best things about this recipe is how easy it is to change based on what you have in your refrigerator.

Use your favorite breakfast meats, vegetables, or cheese combinations.

🥓 Delicious Variations to Try

🥓 Bacon & Cheddar Hash Brown Casserole

Replace the breakfast sausage with 10–12 slices of cooked, crumbled bacon.

Add a little chopped green onion for extra flavor.

🍖 Ham & Cheese Breakfast Casserole

Use 1½–2 cups of diced cooked ham instead of sausage.

This is a wonderful way to use leftover holiday ham!

🌶️ Spicy Southwest Breakfast Casserole

Use hot breakfast sausage, diced jalapeños, and Pepper Jack cheese.

Serve with salsa, sour cream, and sliced avocado.

🥦 Veggie Lovers Breakfast Casserole

Skip the sausage and add a combination of sautéed mushrooms, spinach, onions, and bell peppers.

Be sure to cook off excess moisture from the vegetables before adding them.

🧀 Extra Cheesy Breakfast Casserole

Use a combination of sharp cheddar, Monterey Jack, and mozzarella for an extra gooey, cheesy breakfast.

🍗 Chicken Sausage Breakfast Casserole

Substitute fully cooked chicken breakfast sausage for traditional pork sausage.

It's another delicious option for busy mornings.

🌙 Can You Make This Breakfast Casserole the Night Before?

Absolutely! And that's one of my favorite things about this recipe! 🙌

If you've got family coming over for breakfast or you're preparing for a busy holiday morning, making this casserole ahead of time is a lifesaver.

Overnight Preparation

1. Cook the sausage and vegetables according to the recipe.

2. Allow the cooked mixture to cool.

3. Assemble the casserole in your prepared baking dish.

4. Cover tightly with plastic wrap or aluminum foil.

5. Refrigerate immediately for up to 24 hours.

6. When ready to bake, remove the covering and place the casserole into the preheated oven.

Because the casserole will be cold, you may need an additional 5–10 minutes of baking time.

Always check that the center reaches 160°F.

Important: Keep the assembled casserole refrigerated until you're ready to bake it. Do not leave the egg mixture sitting out overnight.

And y'all, imagine waking up on Christmas morning knowing breakfast is already put together!

All you have to do is pop it in the oven, pour your coffee, and enjoy the morning. 🎄☕

Now THAT is my kind of holiday cooking!

🍽️ What to Serve with Cheesy Hash Brown Breakfast Casserole

This casserole is hearty enough to serve as the main dish, but if you're putting together a full breakfast or brunch spread, here are some delicious additions.

🥐 Homemade Buttermilk Biscuits

A warm, buttery Southern biscuit is always welcome at the breakfast table.

🍓 Fresh Fruit Salad

Strawberries, blueberries, grapes, and melon add a refreshing balance to the rich casserole.

🥓 Crispy Bacon

Because sometimes a Southern breakfast just needs a little extra bacon!

🍞 Cinnamon Toast

A sweet and buttery side pairs perfectly with the savory eggs, sausage, and potatoes.

🥞 Fluffy Pancakes

Perfect if you're feeding a crowd with a mix of sweet and savory breakfast favorites.

☕ Freshly Brewed Coffee

And of course, we can't forget the coffee!

Because around here, coffee is practically a food group. 😂❤️

❄️ How to Store & Reheat Leftovers

Refrigerator Storage

Allow the casserole to cool slightly, then transfer leftovers to airtight containers.

Refrigerate within 2 hours of baking.

Store in the refrigerator for 3–4 days.

Freezer Storage

This casserole freezes beautifully!

Allow the cooked casserole to cool, then cut it into individual portions.

Wrap each portion tightly and place in freezer-safe containers or freezer bags.

Freeze for up to 2–3 months for best quality.

Reheating Instructions

Microwave: Place an individual portion on a microwave-safe plate, cover loosely, and heat until thoroughly warmed.

Oven: Place leftovers in an oven-safe dish, cover with foil, and warm at 325°F until heated through.

For food safety, reheat leftovers to an internal temperature of 165°F.

❓ Frequently Asked Questions

Can I use frozen hash browns without thawing them?

Thawed hash browns are recommended because they cook more evenly and release less excess moisture into the casserole.

Can I use diced hash browns instead of shredded?

Yes! Diced hash browns work well, although the texture will be a little different.

Can I make this without meat?

Absolutely! Simply leave out the sausage and add your favorite cooked vegetables.

Can I use a different cheese?

Of course! Colby Jack, Monterey Jack, mozzarella, or Pepper Jack all work beautifully.

Why is my casserole watery?

Excess moisture from frozen potatoes or uncooked vegetables can make the casserole watery. Thaw and pat the potatoes dry, and cook watery vegetables before adding them.

How do I know when the casserole is done?

The center should be fully set with no visible liquid egg, and a food thermometer should read at least 160°F in the center.

Can I double the recipe?

Yes! Prepare two separate 9 × 13-inch casseroles rather than trying to fit a double batch into one pan. Baking times may vary.

🎄 Perfect for Holidays, Family Gatherings & Busy Mornings

If there's one thing I love about this recipe, it's how versatile it is.

It's perfect for so many occasions!

🎄 Christmas Morning: Assemble it Christmas Eve and bake while everyone opens presents.

🦃 Thanksgiving Morning: Feed the family before the big holiday cooking begins.

🐣 Easter Brunch: Serve with fresh fruit, biscuits, and a few sweet treats.

❤️ Family Reunions: Make two pans to feed a larger crowd.

☕ Weekend Breakfast: Enjoy a slow Saturday or Sunday morning without spending hours in the kitchen.

🧵 Busy Workdays: Bake ahead, portion it out, and enjoy easy breakfasts throughout the week.

And if you're anything like me, having breakfast already figured out makes the whole day feel a little less chaotic! 😂

🧵 A Little Southern Comfort from My Kitchen

Y'all, I've always believed that some of the best memories are made around the kitchen table.

It's not always about fancy meals or complicated recipes.

Sometimes it's a simple casserole bubbling away in the oven while the coffee brews and everybody slowly makes their way into the kitchen.

It's the conversations.

The laughter.

The familiar smells.

The little traditions that become part of our family stories.

And that's one of the reasons I love sharing recipes here at Johnson Heirloom.

Because while I spend my days creating quilts, memory keepsakes, and handmade treasures, I truly believe family recipes are heirlooms too. ❤️

They're the dishes we remember from childhood.

The recipes we make every holiday.

The meals our families request again and again.

And the little pieces of home we carry with us through the years.

This Cheesy Hash Brown Breakfast Casserole might be simple, but sometimes the simplest recipes become the ones we treasure most.

Whether you're serving it on a quiet Sunday morning or at a table surrounded by family during the holidays, I hope it brings a little warmth, comfort, and happiness to your home.

So grab your favorite baking dish, pour yourself another cup of coffee, and give this recipe a try.

And don't be surprised if everybody comes back for seconds! 😂❤️

Happy Cooking, Y'all! 🥔🧀🍳

With love,
Johnson Heirloom
Turning today's moments into tomorrow's treasures.

🌐 www.JohnsonHeirloom.com