This loaded Hashbrown Breakfast Casserole Recipe is made with frozen hash brown potatoes, pork sausage, sweet onion, red bell pepper, eggs, and plenty of cheddar cheese. Make this fit for a crowd savory casserole ahead of time and be ready for your brunch or breakfast guests.
Get ready to impress your guest with this make-ahead, easily customizable breakfast casserole with all your favorites baked up with plenty of cheddar and hash brown potatoes in every bite. This easily freezable casserole is perfect for Christmas morning or for those busy weekends with out-of-town guests.
How to make Hashbrown Breakfast Casserole
Start by letting the frozen hash browns thaw. This will take about 1 hour, so go ahead and take them out of the freezer before starting this recipe. Then place them in a greased 9×13 inch baking dish sprayed with nonstick cooking spray and let them sit for a bit.
Now start browning the pork sausage in a large pan over medium heat. When it is about halfway browned, add the onions and red bell pepper, cooking until the sausage is browned and the onions are soft. Then remove it from the heat and let it cool.
Meanwhile, melt 1/2 cup butter and pour over the hash brown potatoes stirring to coat. Then top with half the shredded cheddar and spoon the cooled sausage vegetable mixture over the potatoes. Now beat the eggs, milk, marjoram, thyme, seasoned salt, and black pepper in a large bowl. Pour the egg mixture into the casserole and top with the remaining cheese and half of the green onions. Bake for about 45 minutes or until no longer wiggly in the middle. Then top with the remaining green onions. Let sit for 10-15 minutes before slicing. Garnish with green onions, thyme leaves, or chopped parsley.
Recipe notes and helpful tips
- Frozen hash browns take about 1 hour to thaw, so plan accordingly.
- You can use shredded or diced hash browns. I think the shredded work just a little bit better because the cheese and eggs seem to melt down between the layers of the shredded potatoes.
- Any colored pepper will work for this recipe – red, orange, yellow, or green. I prefer red because of the sweetness it lends to the dish.
- Use pork, chicken, or turkey sausage as long as it breaks up and browns.
- Try adding diced smoked ham or chopped crispy bacon.
- Experiment with different cheeses like Colby Jack, Monterey Jack, Gouda, Muenster, Provolone, Mozzarella, or Pepper Jack.
- Let the casserole cool for a few minutes before slicing.
- Store leftovers in an airtight container in the fridge for up to 3 days. Reheat in the microwave at reduced power.
How to make it ahead
Prepare the casserole up to a day in advance but do not bake. Cover tightly with plastic wrap and place on a flat-level surface in the refrigerator. Remove the casserole from the fridge 40 minutes prior to baking to come to room temperature. Then remove the plastic wrap and bake according to the recipe instructions. The sausage vegetable mixture can be prepared up to 2 days in advance, cooled, and stored in an airtight container in the refrigerator.
How to freeze Hashbrown Breakfast Casserole
Prepare the casserole per the instructions but do not bake. Then cover with several layers of plastic wrap and place in the freezer on a flat level surface. Freeze for up to 2 months. Defrost in the refrigerator overnight or for at least 12 hours. Remove from the fridge 40 minutes prior to baking to come to room temperature. Bake according to recipe instructions.
More breakfast recipes you will love!
Hash Brown Breakfast Casserole
A super easy make-ahead and freezer-friendly Hashbrown Breakfast Casserole that is totally customizable to suit your taste with different breakfast meats like sausage, bacon, or ham, different vegetables, and a variety of cheeses.
- Prep Time: 20 minutes
- Cook Time: 45 minutes
- Total Time: 1 hour 5 minutes
- Yield: 12 servings
- Category: breakfast
- Method: bake
- Cuisine: American
Ingredients
- 30 ounces shredded hash brown potatoes thawed
- 1 lb ground breakfast sausage (I love Jimmy Deans All Natural)
- 1 medium onion finely diced
- 1 red pepper diced
- ½ cup butter
- 10 eggs
- 1 cup milk
- 1/2 teaspoon marjoram
- ½ teaspoon dried thyme
- ½ teaspoon seasoned salt
- ½ teaspoon fresh ground black pepper
- 3 cups shredded cheddar
- 3 green onions thin sliced (divided)
Instructions
- Preheat oven to 350 degrees. Spray a 9×13 casserole dish with nonstick baking spray.
- Place the thawed hash browns in the bottom of the casserole dish.
- Brown the pork sausage in a large skillet over medium heat. When it is about halfway browned, add the onions and red bell pepper, cooking until the sausage is browned and the onions are soft. Remove from the heat and let it cool.
- Melt 1/2 cup butter and pour over the hash brown potatoes stirring to coat. Top with half the shredded cheddar. Spoon the cooled sausage vegetable mixture over the potatoes.
- Beat the eggs, milk, marjoram, thyme, seasoned salt, and black pepper in a large bowl. Pour it into the casserole and top with the remaining cheese and half of the green onions.
- Bake for 45-50 minutes or until set and no longer wiggly in the middle. Sprinkle with remaining green onions. Let sit for 10-15 minutes before slicing.
Notes
- Frozen hash browns take about 1 hour to thaw, so plan accordingly.
- You can use shredded or diced hash browns. I think the shredded work just a little bit better because the cheese and eggs seem to melt down between the layers of the shredded potatoes.
- Any colored pepper will work for this recipe – red, orange, yellow, or green. I prefer the red because of the sweetness it lends to the dish.
- Use pork, chicken, or turkey sausage as long as it breaks up and browns.
- Try adding diced smoked ham or chopped crispy bacon.
- Experiment with different cheeses like Colby Jack, Monterey Jack, Gouda, Muenster, Provolone, Mozzarella, or Pepper Jack.
- Let the casserole cool for a few minutes before slicing.
- Store leftovers in an airtight container in the fridge for up to 3 days. Reheat in the microwave at reduced power.
Keywords: egg and hashbrown casserole, sausage hashbrown breakfast casserole, breakfast casserole with hashbrowns
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Bernadette
You can substitute O’Brien potatoes for the hash browns to save time and prep work. Onions and peppers are already in it.
★★★★★
Judy
I will be making this one again. This time, for Easter, I added some sliced asparagus to the middle layer. I even made some quick hollandaise too make the dish extra special. The top layer of sausage and cheese got slightly overcooked so next time I’ll lightly cover the top with foil for a bit.
★★★★★
Beth Pierce
Thanks for the tips, Judy! Happy Easter!
Kimberly Vestal
This can also be made in muffin tins. Spray muffin cups with cooking spray. Then place a layer of hash brown potatoes, cheese, then egg mixture. Bake accordingly. These are great for breakfast on the run. You can also place them on a biscuit with sausage, ham, bacon, etc.
Beth Pierce
Thanks for the tips, Kimberly!
Jasmine Martin
This looks so tasty. I absolutely love eating breakfast casseroles and I am going to have to make this for my family soon.
Elizabeth Williams
This looks very tasty, filling and a wholesome meal to start the day. I’ve never thought of a breakfast casserole before but going to give this a try as an alternative to traditional breakfast options.
★★★★★
Luna S
My step-dad makes one similar to this and ooh it is so good! I need to try and make this on my own so I know how to make it too.
Tammy
Oooh this was absolutely delicious and comforting! So easy to make, too…yum!
Lisa at Following the Rivera
We just love this hearty casserole. Hash browns are so good and we just love casserole with them in there.
★★★★★
Melanie E
That’s such a great breakfast recipe. It’s handy that it freezes too.
★★★★★
Melsisa Cuhsing
This is my kind of breakfast! It looks so good and I have already pinned it to make on Christmas Eve or Christmas morning! Thank you!
★★★★★
Yeah Lifestyle
My kids love hash browns, so I thought I would give this a try. It was a big hit and made a nice change and I would make it again.
★★★★★
Beth Pierce
Thanks, so glad that the kids enjoyed it!
Indu Indra
Healthy breakfast is the best way to start a day. Different recipes bring variety to choose from and try.
Whitney Stewart
Yum, do luv me some hash brown casserole! It’s super easy to put together and leftovers prefect for mornings I’m too lazy to cook! Thank you for this! I’ll definitely be trying it out very soon!
★★★★★
Corrinne Sessions
Can I prep this and make it the next morning? Will it sit overnight okay? Anyone try that?
Beth Pierce
Sorry about the delayed response. I have been a little under the weather. Yes, you can prepare this ahead of time and refrigerate it until ready to bake. Remove about 40 minutes prior to baking to come to room temperature.
Kelly Summersett
This was a favorite and feeds a lot! Easy to make and very tasty!
Beth Pierce
Thanks, Kelly! So glad that you liked it!
Karla Colestock
Can this be frozen after it is baked?
Beth Pierce
Yes
Tina Basu
This was so yum! Pure comfort food! Thanks for the recipe!
Khushboo
Wow it looks so yummy and delicious.I would like to to try this sometime.
Tammy
What a wonderful breakfast treat on the weekends and best the day after too! Thanks for the great recipe. The family really loved it!
★★★★★
Jasmine Hewitt
I’m saving this so I can try it tomorrow. I don’t usually eat a lot of eggs but i’ll try it for this one!
★★★★★
Beth Pierce
Thanks Jasmine! Enjoy!!
Glass Mosaic Tiles
omg this looks sooooooo good! I am doing it for sure, I am thinking tomorrow…Thank you so so much.
Beth Pierce
Thanks so much. Enjoy!
LavandaMIchelle
This is a perfect breakfast dish. My family loves it! Thanks for an amazing recipe!
★★★★★
Beth Pierce
The pleasure is all mine Lavanda!
Cathy
Just wanted to say TY for sharing your recipes without having to join a group or sign up for anything. I really like that your recipes are not so plain. I jazzed this one up with HOT Jimmy Dean sausage and added fresh Hatch green chilis to the egg mixture!
Beth Pierce
You are most welcome! The pleasure is all mine. That sounds amazing! I bet it was delicious!
Stephanie
Now this is my kind of breakfast! We have “Big Breakfast Sunday” at our house and I will be making this one this weekend. My whole family will devour this for sure.
★★★★★
Jan
Did y’all use the marjoram and thyme in the recipe? Would it be ok if I left those ingredients out or does it really make a difference?
Kat
I’m not the author of this blog, but I have made many a frittata and egg casserole in my time. I would say use whatever herbs/spices you have on hand, or prefer. To me, the whole point of a basic recipe like this is to swap out what doesn’t suit your palate or insides (my mom can’t handle pork sausage, for example), and put in what makes your taste buds tap dance. 😁 In the case of herbs and spices, On one occasion, I’ll use what’s in the recipe, and on another, I may use some “Slap Ya Mama” spice instead, just because I’m in the mood for a Cajun kick to start the day. 😁 Happy cooking!
Allyson Zea
This casserole is the perfect weekend treat!
★★★★★
Catalina
This breakfast casserole was so hearty and delicious. It was perfect for our Sunday brunch and there was plenty for the whole family!
★★★★★
Sandra
This is seriously the best way to start my days! Really amazing!
★★★★★
Juliane
This was a good addition to start my day! My family just loved it and they want me to make again soon!
★★★★★
Erin | Dinners,Dishes and Dessert
This is most definitely an EPIC breakfast!
★★★★★
Erik
This is exactly the kind of breakfast treat I love!
★★★★★