Hash brown breakfast casserole is loaded with shredded hash browns, savory pork sausage crumbles, eggs and plenty of cheese to tie it all together.
This hearty, comforting casserole can be baked right away or made a day in advance and it's always a crowd pleaser!

This post has been updated with new photos.
There's something that's just comforting and homey about a breakfast casserole. It's such a good way to start the day.
Today, we're featuring a favorite classic with this hash brown breakfast casserole.
It's loaded with shredded hash browns, savory pork sausage crumbles, some onion and bell peppers for flavor and interest, a creamy egg mixture and plenty of cheese to tie it all together.
It's cozy and hot and downright delicious!
And bonus, you can absolutely prep this ahead of time and then bake it off in the morning. Gotta love that, especially if family or friends are visiting.
Let's dive in to today's recipe.






Recipe Notes:
Hash browns: Feel free to use a refrigerator package of hash browns or a frozen one. Just make sure it's thawed completely if yours was frozen.
Sausage: I use regular pork sausage, like Jimmy Dean, the kind that comes in a large round roll. You could also substitute turkey sausage. But it does need to be cooked and crumbled to use in this recipe, so please plan accordingly.
Bell pepper: I like using a mix of red and green bell pepper, especially at the holidays, but you could use all one color if you prefer.
Milk: Using whole milk, 2% or half and half adds some extra creaminess and richness to this casserole. However, skim milk or a fat-free half and half would be fine, too.
Cheese: Shredded cheddar cheese is my go-to, but you could mix it up and use Monterey Jack cheese or a Mexican blend cheese for this casserole if you'd like.
Lots of ways to make it your own and use what you have.

As mentioned, you can prepare it in advance if needed. That can be a big help around the holidays or if you have guests coming into town.
Make Ahead Tips:
- Prepare the entire casserole as directed. Cover tightly with plastic wrap and refrigerate for up to 24 hours.
- Remove from the refrigerator and uncover as you preheat the oven.
- Bake as directed, adding an additional 5-10 minutes to the bake time to ensure the casserole gets hot.

As for serving, we slice this into 12 large pieces and dive right in.
If you need to round out the meal, this mixed greens brunch salad is a perfect accompaniment for something light and fresh. Or do a fruit salad and maybe some blueberry scones.
And of course, a coffee station and mimosa bar are always hits.
Here's to the upcoming holiday season, all the time with family and friends, and lots of delicious eats.
Enjoy!
XO,
Kathryn
P.S. You might also love this cheesy hash brown casserole that's great as a side dish for dinner!
Hash Brown Breakfast Casserole
Ingredients
- 1 (16 oz) bag shredded hash browns, thawed if frozen
- 1 lb. pork sausage, cooked, crumbled and drained
- ½ cup onion, finely diced
- ½ red bell pepper, diced
- ½ green bell pepper, diced
- 2 cups shredded cheddar cheese, divided
- 8 large eggs
- 1 ⅓ cups whole milk, 2% milk or half and half
- ½ teaspoon ground mustard
- ½ teaspoon kosher salt
- ¼ teaspoon black pepper
Instructions
- Preheat oven to 350, if baking right away.
- In a 9x13 casserole dish, combine the hash browns, cooked sausage, onion, peppers and 1 ⅓ cups shredded cheese. Mix well and spread into an even layer.
- In a medium bowl, whisk together the eggs, milk, dry mustard, salt and black pepper. Pour over the casserole. Sprinkle the top of the casserole with the remaining ⅔ cup shredded cheese.
- Bake at 350 for 1 hour. Or if preparing ahead, cover with plastic wrap and refrigerate for up to 24 hours. Remove from the refrigerator while you preheat the oven and add 5-10 minutes to the baking time to ensure the casserole gets cooked through and hot.
- Let rest for 5 minutes to allow it to set up, then slice and serve.
Notes
Video
Nutrition
Are you a breakfast fanatic like me? Well then, I've got lots more deliciousness for you.
This classic sausage and egg casserole is our go-to and has been in my family for years. It's a Christmas morning breakfast favorite, especially alongside this Christmas coffee cake.
I also switch things up and make my healthy sausage breakfast casserole that uses turkey sausage and is loaded with veggies. Totally up my alley.
And these individual breakfast casseroles, made in ramekins, are perfect when you need to customize them for different guests - picky kids, gluten-free family members, vegetarian lifestyles, egg allergies, etc.
And as long as we're on the topic, this overnight cheesy grits casserole and overnight French toast casserole are great for the holidays when you have family or friends in town. Prep the night before and the hard work is done. Same goes for this hearty grits and sausage casserole.
We are in for some happy mornings. Enjoy!







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