Sausage Brunch Casserole is the kind of breakfast bake I make when I want something hearty, cheesy, and actually filling. It’s eggs and hash browns with savory sausage, baked into neat slices that don’t fall apart.
What I like most is the mix of textures: tender egg custard, crisp edges, and those soft hash browns in the middle. The onion and bell pepper keep it from tasting flat, and cheddar is the right call here.
This one is especially good for weekend brunch, holiday mornings, or any time you need breakfast to feed a few people without standing at the stove. I usually serve it with fruit and something spicy on the side.
Why You’ll Love This Recipe
Big breakfast energy: It eats like a full meal, not a light breakfast. One square goes a long way.
Make-ahead friendly: This is one of those casseroles that’s easy to assemble ahead, then bake when you’re ready.
Reliable texture: Thawed hash browns and a simple egg custard give you clean slices that hold together well.
Cheesy and savory: Sausage + cheddar is a classic combo for a reason. It’s rich, salty, and just works.
Easy to tweak: Swap the sausage, change the cheese, or add vegetables depending on what you have.
Ingredients You’ll Need
Casserole Base
- Breakfast sausage: I use regular pork breakfast sausage, but turkey sausage works too if you want it a little lighter. If your sausage is very salty, go a little easy on extra seasoning later.
- Frozen shredded hash browns: Thaw them fully, then squeeze out extra moisture. That’s what helps the casserole set up firm instead of getting watery.
- Shredded cheddar cheese: Cheddar gives the right bite here. Pepper jack is great if you want a little heat, and a cheddar-mozzarella blend is nice if you like it extra melty.
- Yellow onion: I like a small dice so you get flavor without big chunks. Sweet onion works fine too.
- Bell pepper: Any color is fine. I usually use green or red depending on what’s in the fridge.
- Unsalted butter: This is just for greasing the baking dish so the edges release easily and brown nicely.
- Green onions: I like them as a simple garnish at the end. They add freshness without taking over.
Egg Custard
- Eggs: This is the base that holds everything together. Use large eggs so the bake sets up the way it should.
- Whole milk: Whole milk makes the custard richer and less watery. You can use 2% if that’s what you have, but it won’t be quite as creamy.
- Kosher salt: Seasoning matters in an egg bake. If your sausage is very seasoned, you can shave this down a bit.
- Black pepper: Freshly ground is my preference, but whatever you have is fine.
- Garlic powder: I like garlic powder here because it blends into the eggs evenly. Fresh garlic can be a little sharp in a baked custard.
- Paprika: Just a little warms up the flavor and gives the top a nice color.
Recipe Instructions
- Preheat the oven: Heat the oven to 350°F. Grease a 9 x 13-inch baking dish with the butter.
- Brown the sausage: Cook the sausage in a skillet over medium heat until browned and cooked through, breaking it up as it cooks. Drain off excess fat.
- Cook the vegetables: Stir the diced onion and bell pepper into the sausage and cook until they’re slightly softened. Let the mixture cool for about 5 minutes.
- Add the hash browns: Spread the thawed hash browns evenly in the greased baking dish.
- Add the sausage and cheese: Scatter the sausage mixture over the hash browns, then top with the shredded cheddar.
- Whisk the eggs: In a large bowl, whisk the eggs, milk, salt, pepper, garlic powder, and paprika until fully combined.
- Pour the custard: Pour the egg mixture evenly over the casserole, making sure it runs into the corners.
- Bake: Bake for 50 to 60 minutes, until the center is set and the top is lightly golden.
- Rest and serve: Let the casserole rest for 10 minutes, then garnish with green onions. Slice and serve.
Some of my tips!
This is the part that really makes a difference. If you only read one section, make it this one because this is where I share the little trick that helps the recipe turn out so well.
Recipe Tips & Tricks
Squeeze the hash browns dry. This is the difference between a casserole that slices cleanly and one that’s a little loose. I just wrap them in a clean towel and wring out the water.
Drain the sausage well. If there’s a lot of grease, the bottom can get heavy. I drain it, then give it a quick blot if it still looks oily.
Cool the sausage mixture a bit. If it’s piping hot when you add the eggs later, it can start cooking them on contact. Five minutes is enough.
Watch the center, not just the top. If the middle still jiggles a lot, it needs more time even if the top looks done. A small knife should come out mostly clean from the center.
Keep add-ins on the dry side. Mushrooms and spinach are great here, but cook off their moisture first. Wet vegetables can make the whole casserole softer.
Make some touches!
There are plenty of easy ways to serve this depending on the occasion. Keep it simple, or add a few small touches to make it feel a little more special.
Serving Suggestions
- Hot sauce: A few dashes on top wakes everything up. I like a vinegar-forward hot sauce with the sausage and cheddar.
- Fresh fruit: A bowl of berries, melon, or citrus is an easy side. It’s nice to have something cold and fresh with a rich casserole.
- Simple salad: If this is more of a brunch-lunch situation, a quick arugula or mixed greens salad is good. Just lemon, olive oil, and salt is plenty.
- Salsa or pico: Spoon a little over each slice right before serving. It adds moisture and a bit of acidity.
- Toast or biscuits: Not required, but it’s nice if you’re feeding a bigger group. I usually do something simple like buttered toast.
Save it for later
This section covers how to store leftovers and what parts of the recipe you can prepare ahead of time.
Storage and Make Ahead
Store leftovers covered in the fridge for up to 4 days. Reheat squares in the microwave for a quick breakfast, or warm them in the oven until hot.
You can make this recipe ahead by assembling the casserole, covering it tightly, and refrigerating it for up to 12 hours. It’s a nice way to get most of the work done the night before.
Bake from cold with a little extra time. If it’s going straight from the fridge to the oven, plan on adding about 5 to 10 minutes, and keep an eye on the center.
If you want them to last longer, freeze individual portions in an airtight container. Thaw in the fridge overnight and reheat as usual.
A few quick answers
This section covers a few extra details that may help before you head to the recipe card.
Recipe FAQs
Do I have to thaw the hash browns first?
Yes, I really recommend it. Thawed hash browns (and squeezing out the extra moisture) help the casserole set up firm instead of turning out watery.
How do I know when the casserole is done?
The center should look set, not liquidy, and a knife inserted near the middle should come out mostly clean. A little moisture is fine, but it shouldn’t look like raw egg.
Can I use turkey sausage or vegetarian sausage crumbles?
Definitely. Turkey sausage works great, and vegetarian crumbles are an easy swap too. Just make sure whatever you use is cooked and not too wet before it goes into the pan.
What other cheese works well?
Pepper jack is good if you like a little heat. A cheddar-mozzarella blend also works if you want it slightly milder and extra melty.
Can I add vegetables?
Yes—mushrooms and spinach are both good here. The main thing is to cook them first and let the moisture cook off so the casserole doesn’t get soft.
You might also like
Before you go, take a look at a few other recipes below the recipe card. They use similar ingredients in a different way and are worth saving too.
MORE DINNER RECIPES TO TRY
Sausage Brunch Casserole
INGREDIENTS
Casserole Base
- 1 lb breakfast sausage
- 20 oz frozen shredded hash browns thawed
- 2 cups shredded cheddar cheese
- 1/2 cup diced yellow onion
- 1/2 cup diced bell pepper
- 2 tbsp unsalted butter for greasing
- 2 tbsp sliced green onions for garnish.
Egg Custard
- 8 large eggs
- 2 cups whole milk
- 1 tsp kosher salt
- 1/2 tsp black pepper
- 1/2 tsp garlic powder
- 1/4 tsp paprika.
INSTRUCTIONS
Prep and Brown Sausage
- heat oven to 350 F and grease a 9 x 13 inch baking dish
- cook sausage in a skillet over medium heat until browned and cooked through then drain excess fat
- stir in onion and bell pepper and cook until slightly softened then cool 5 minutes.
Assemble and Bake
- spread hash browns evenly in the baking dish then top with sausage mixture and cheddar
- whisk eggs milk salt pepper garlic powder and paprika until fully combined then pour evenly over the dish
- bake until the center is set and the top is lightly golden 50 to 60 minutes
- rest 10 minutes then garnish with green onions and slice to serve.
