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Amazing Hash Brown Breakfast Casserole: 6 Eggs

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Mary Smith

November 22, 2025

A close-up of a golden-brown slice of Hash Brown Breakfast Casserole with colorful bell peppers and herbs.

Mornings can be such a rush, right? Between getting everyone out the door and trying to get yourself together, breakfast often feels like a second thought. That’s why I’m absolutely obsessed with this One Pan Hash Brown Breakfast Casserole. It’s my secret weapon for those crazy weekdays, and honestly, it’s just as perfect for a lazy Sunday brunch. Just toss everything into one pan, pop it in the oven, and boom – a super satisfying, cheesy, eggy breakfast that tastes like you slaved away for hours. Trust me, this is going to be your new favorite way to start the day!

Why You’ll Love This Hash Brown Breakfast Casserole (One Pan)

Seriously, what’s not to love? This casserole is a total game-changer because:

  • It’s ridiculously easy – toss ingredients in one pan and bake!
  • Minimal cleanup means more time enjoying your morning (or snoozing!).
  • It’s a crowd-pleaser; who doesn’t love cheesy potatoes and eggs?
  • Super versatile – add your favorite veggies or breakfast meats.

Ingredients for Your Hash Brown Breakfast Casserole (One Pan)

Alright, let’s talk about what you’ll need to whip up this glorious breakfast. The beauty of this hash brown breakfast casserole is that it uses stuff most of us already have lurking in the fridge or freezer. Seriously, good ingredients, like fresh veggies and real cheese, make all the difference here. It just takes everything up a notch!

Here’s what you’ll want to grab:

  • Frozen hash browns: One 20-ounce package, make sure they’re thawed out.
  • Shredded cheddar cheese: About 1 cup. Sharp cheddar is my go-to for that punchy flavor!
  • Onion: Half a cup, finely chopped. I like yellow onions for their mild sweetness, but sweet onions work great too.
  • Green bell pepper: Half a cup, chopped. This adds a nice little bit of freshness and color.
  • Large eggs: You’ll need 6 of these. They’re the binder that holds this deliciousness together.
  • Milk: Half a cup. Whole milk gives the best creamy texture, but you can use what you have.
  • Salt: Just a 1/4 teaspoon.
  • Black pepper: A pinch, about 1/8 teaspoon.

Essential Equipment for Making Hash Brown Breakfast Casserole

To make this amazing one-pan hash brown breakfast casserole, you really don’t need much! Just grab a 13×9 inch baking dish – that’s your main stage for all the deliciousness. You’ll also want a whisk to get those eggs fluffy and a spatula for spreading things around perfectly. That’s it, simple as can be!

Step-by-Step Guide to Your One Pan Hash Brown Breakfast Casserole

Okay, let’s get this baking dish filled with breakfast goodness! It’s honestly so simple, you’ll be making this all the time. If you’re looking for super quick and easy breakfast ideas, this is it! Promise me you’ll give this a try!

Prepping the Pan and Base

First things first, get your oven preheated to 375°F (190°C). While that’s heating up, lightly grease your 13×9 inch baking dish. Then, spread those thawed hash browns out evenly in the bottom. I like to gently press them down with my spatula to make a nice, solid base – it helps them get a little golden and crispy!

Layering the Flavors

Now for the tasty bits! Sprinkle that lovely shredded cheddar cheese all over the hash browns. Go ahead and scatter the chopped onion and green bell pepper on top of the cheese. It’s starting to look like a real breakfast party in that pan already!

Creating the Egg Mixture

Grab a separate bowl – you know I love keeping things clean, kind of! – and whisk together your 6 large eggs, half a cup of milk, and that pinch of salt and pepper. Just whisk it until it’s all combined and looks nice and smooth. No one wants eggy streaks in their casserole, right? It’s kind of like making egg muffins, just in a bigger pan!

Combining and Baking

Now for the grand finale! Pour that wonderful egg mixture evenly over everything in the baking dish. Make sure it gets into all the nooks and crannies. Pop it into your preheated oven and let it bake for about 30 to 35 minutes. You’re looking for the eggs to be completely set – no jiggly bits! – and the top should be a lovely, light golden brown. The smell alone will tell you it’s almost ready!

A close-up of a slice of Hash Brown Breakfast Casserole (One Pan) with visible chunks of red and green bell peppers.

Resting and Serving

Once it’s out of the oven, let it sit for just a few minutes before you dig in. This helps everything settle and makes it easier to slice.

A delicious slice of Hash Brown Breakfast Casserole (One Pan) topped with melted cheese, red peppers, and green onions.

Tips for the Perfect Hash Brown Breakfast Casserole

Okay, you’ve got the basic idea, but let me share a couple of my tried-and-true tricks to make this hash brown breakfast casserole absolutely perfect every single time. Trust me, these little things make a *huge* difference! If you love hearty protein-packed breakfasts, this is for you.

First, about those hash browns: make sure they’re *really* thawed. I usually pop the bag in the fridge overnight. If I forget (oops!), I’ll spread them out on a baking sheet for about 30 minutes before I start prepping everything else. This just helps them cook evenly and stops your casserole from getting watery. Nobody wants a soggy bottom breakfast! It’s like when I prep breakfast burritos – having everything ready makes it so much easier!

Also, don’t be afraid to jazz up the cheese! Cheddar is my favorite because it melts so well and has a great flavor, but a mix of cheddar and Monterey Jack is amazing for extra creaminess. Or, for a little kick, try some pepper jack! I’ve also found that if you’re adding extras like cooked bacon or sausage (which you totally should – they’re fantastic in this!), make sure any excess grease is drained off before you add them to the pan. We want flavor, not grease bombs!

A slice of Hash Brown Breakfast Casserole with eggs, sausage, cheese, and colorful bell peppers.

Ingredient Substitutions and Variations

Okay, so you’ve got the basic recipe, but the fun part is making it totally your own! One of the things I adore about this hash brown breakfast casserole is how easy it is to tweak. If you’re not a huge cheddar fan, no worries! I’ve used Monterey Jack, a Colby-Jack blend, or even a sharp provolone, and they’re all delicious. For a bit more zing, pepper jack is fantastic! And you *absolutely* should add meat if you can. Cooked crumbled bacon or sausage is a no-brainer and adds so much savory goodness. Just make sure to drain off any extra grease before adding it, okay?

Don’t stop there, though! Veggies are your friend here. Feel free to toss in some chopped mushrooms, spinach (wilted a bit first!), or even some diced ham. It’s a great way to use up whatever you’ve got hanging around, kind of like how I prep these meal prep breakfast burritos – anything goes! Honestly, this casserole is so forgiving, it’s hard to mess it up, which is why it’s perfect for busy mornings or when you just want something simple and satisfying, much like these healthy chicken and rice recipes!

A slice of Hash Brown Breakfast Casserole (One Pan) with visible eggs, cheese, and red bell peppers.

Storing and Reheating Your Hash Brown Breakfast Casserole

Got leftovers? Lucky you! This hash brown breakfast casserole is fantastic the next day. Just pop any extra into an airtight container and store it in the fridge for up to 3 days. Honestly, I love it cold for breakfast sometimes, but if you want it warm, the microwave works great – just zap it for about 30-60 seconds until heated through. For a crisper texture, you can pop a slice in a toaster oven or a regular oven at around 350°F (175°C) for about 10-15 minutes. It’s almost as good as fresh out of the oven! If you’re super organized, you can even prep this whole dish ahead of time for your weekly meal prep!

Frequently Asked Questions about Hash Brown Breakfast Casserole

Got questions about this yummy hash brown breakfast casserole? I’ve got you covered! This is one of those recipes that’s just so straightforward, but sometimes a little clarification goes a long way. People always ask me about using fresh potatoes or getting it just right, so let’s dive in!

Can I use fresh, homemade hash browns instead of frozen?

You sure can! If you’re feeling ambitious, use about 2 pounds of potatoes, grated. Just make sure you squeeze out as much moisture as possible before adding them to the pan. They might need a few extra minutes to bake since they’re not pre-cooked like the frozen ones.

How do I prevent my casserole from being watery?

Oh, the dreaded watery casserole! The biggest culprit is usually not thawing your frozen hash browns completely. Spread them out on a paper towel and pat them dry really well before they go into the dish. Also, make sure your eggs are fully set when it comes out of the oven!

Can I make this Hash Brown Breakfast Casserole (One Pan) ahead of time?

Yes, you totally can! You can assemble the whole casserole (up to pouring the eggs over) the night before and keep it covered in the fridge. Just add a few extra minutes to the baking time. You can also bake it completely, let it cool, and then reheat portions. It’s a lifesaver for busy mornings!

Nutritional Information

Just a little heads-up, the nutrition info for this amazing hash brown breakfast casserole is an estimate, per serving. It can change a bit depending on exactly what you put in it, like the type of cheese or any extras you add. If you’re keeping an eye on calories or focusing on calorie-smart recipes or diet recipes, it’s always good to check your specific ingredients!

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  • Author: Mary

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