If you ask me, breakfast casseroles are one of the smartest things you can make for a crowd.
This hearty dish combines savory breakfast sausage, fluffy eggs, and melted cheese all baked together in one pan. It’s the kind of recipe that makes weekend mornings easier and keeps everyone happy.
You can prep it the night before and just pop it in the oven when you wake up. The sausage adds plenty of flavor, while the eggs and cheese create a creamy, satisfying base that holds everything together.
It’s a filling breakfast that feeds a bunch of people without much fuss, perfect for lazy Sunday mornings or when you have guests staying over.
Why You’ll Love This Breakfast Casserole
- Perfect for feeding a crowd – This casserole serves multiple people at once, making it ideal for weekend brunches, holiday mornings, or when you have guests staying over.
- Make-ahead friendly – You can prep this the night before and just pop it in the oven in the morning, giving you more time to enjoy your coffee and relax.
- Simple ingredients – With just sausage, eggs, cheese, and a few pantry staples, you probably have everything you need already in your kitchen.
- Protein-packed breakfast – The combination of eggs, sausage, and cheese keeps you full and satisfied all morning long, so you won’t be reaching for snacks before lunch.
- Easy cleanup – Everything cooks in one dish, which means less time scrubbing pans and more time enjoying your breakfast.
What Kind of Breakfast Sausage Should I Use?
You’ve got plenty of options when it comes to breakfast sausage for this casserole. Ground pork sausage is the classic choice, and you can go with mild, medium, or hot depending on how much spice you like. If you’re looking for a leaner option, turkey or chicken breakfast sausage works just as well and still gives you that savory flavor. You can also use pre-cooked sausage links or patties if that’s what you have on hand – just chop them up into bite-sized pieces before adding them to the casserole. Whatever you choose, make sure to cook and drain any excess grease before mixing it in, so your casserole doesn’t end up too oily.
Options for Substitutions
This breakfast casserole is pretty forgiving when it comes to swapping ingredients:
- Breakfast sausage: You can easily swap this with ground turkey sausage, chicken sausage, or even crumbled bacon. If you want to go meatless, try using plant-based sausage crumbles or sautéed mushrooms for a hearty texture.
- Whole milk: 2% milk, half-and-half, or even unsweetened almond milk will work here. Just keep in mind that lower-fat milks will make the casserole slightly less creamy, while half-and-half makes it richer.
- Sharp cheddar cheese: Feel free to use whatever cheese you have on hand – monterey jack, colby, gruyere, or pepper jack all work great. You can also mix a couple of cheeses together for more flavor.
- Dried minced onion: Fresh onion works too – just use about 1/4 cup of finely chopped onion and sauté it with the sausage. You can also skip the onion entirely if you’re not a fan.
- Eggs: Don’t substitute the eggs in this recipe – they’re what holds the whole casserole together and gives it that classic breakfast texture.
Watch Out for These Mistakes While Baking
The biggest mistake with breakfast casseroles is not fully cooking the sausage before adding it to the dish, which can leave you with greasy, undercooked meat and a watery casserole – make sure to brown it completely and drain off all the excess fat.
Another common error is whisking the eggs too vigorously or not mixing them well enough with the milk, so aim for a gentle but thorough blend until everything is just combined and you don’t see streaks of egg white.
To avoid a rubbery texture, don’t overbake the casserole – it’s done when the center is just set and still has a slight jiggle, usually around 35-40 minutes, since it will continue cooking as it cools.
Save about half of your cheese to sprinkle on top during the last 10 minutes of baking instead of mixing it all in, which gives you that golden, melted cheese layer everyone loves.
What to Serve With Breakfast Casserole?
This hearty breakfast casserole is pretty filling on its own, but I love serving it with some fresh fruit on the side to balance out all that richness. A simple fruit salad with berries, melon, and grapes works great, or you can just slice up some oranges or grapefruit for a bright, citrusy contrast. If you want to round out the meal, add some buttered toast or English muffins for extra carbs, and maybe some hash browns or breakfast potatoes if you’re feeding a crowd. A pot of hot coffee and some orange juice are all you need to complete this weekend breakfast spread.
Storage Instructions
Store: This breakfast casserole is a meal prep dream! Once it’s cooled down, cover it tightly with foil or plastic wrap and keep it in the fridge for up to 4 days. You can also slice it into individual portions and store them in separate containers for easy grab-and-go breakfasts throughout the week.
Freeze: Cut the casserole into squares and wrap each piece individually in plastic wrap, then place them all in a freezer bag. They’ll stay good for up to 3 months, which is great when you want a homemade breakfast without any work.
Reheat: Warm up refrigerated portions in the microwave for about 1-2 minutes, or pop them in a 350°F oven for 10-15 minutes until heated through. For frozen pieces, let them thaw in the fridge overnight, or microwave straight from frozen on 50% power for 3-4 minutes.
| Preparation Time | 15-20 minutes |
| Cooking Time | 40-45 minutes |
| Total Time | 55-65 minutes |
| Level of Difficulty | Easy |
Estimated Nutrition
Estimated nutrition for the whole recipe (without optional ingredients):
- Calories: 1800-2000
- Protein: 110-120 g
- Fat: 145-160 g
- Carbohydrates: 15-20 g
Ingredients
For the egg base:
- 12 large eggs
- 3/4 cup whole milk
- 1 tsp salt
- 1/4 tsp ground black pepper
For the sausage mixture:
- 1 lb breakfast sausage
- 1 tbsp dried minced onion
For assembly:
- 1 cup shredded sharp cheddar cheese, divided
Step 1: Brown the Sausage with Onion
- 1 lb breakfast sausage
- 1 tbsp dried minced onion
In a large skillet over medium heat, cook the breakfast sausage, breaking it up into small pieces as it cooks.
Add the dried minced onion to the skillet and continue cooking until the sausage is well browned and no longer pink.
Drain any excess fat if necessary.
Step 2: Prepare the Egg Mixture
- 12 large eggs
- 3/4 cup whole milk
- 1 tsp salt
- 1/4 tsp ground black pepper
Crack the eggs into a large mixing bowl and whisk until smooth.
Add the whole milk, salt, and ground black pepper, and whisk again until everything is well combined.
I like to take my time whisking here to ensure the mixture is light and fluffy.
Step 3: Layer the Sausage and Cheese in the Casserole Dish
- cooked breakfast sausage with onion from Step 1 (3/4 of total)
- 1/2 cup shredded sharp cheddar cheese
Preheat your oven to 350°F (175°C).
Grease a casserole dish with butter or nonstick spray.
Add 3/4 of the cooked sausage with onion (from Step 1) to the bottom of the dish.
Top this layer with half of the shredded sharp cheddar cheese.
Step 4: Add Egg Mixture and Bake
- egg mixture from Step 2
Pour the egg mixture (from Step 2) evenly over the sausage and cheese layers in the casserole dish.
Place the casserole into the preheated oven and bake for 30 minutes, or until the eggs are mostly set in the center.
Step 5: Top with Cheese and Sausage, Then Finish Baking
- remaining 1/2 cup shredded sharp cheddar cheese
- remaining cooked breakfast sausage with onion from Step 1
After 30 minutes of baking, remove the casserole from the oven.
Sprinkle the remaining shredded sharp cheddar cheese and the reserved cooked sausage with onion (from Step 1) over the top.
Return the casserole to the oven and bake for another 10-15 minutes, until the cheese is well melted and the center is completely set.
For a nice golden top, you can broil it for an extra minute or two—I always think this makes the dish look even more appetizing!
Step 6: Cut and Serve the Casserole
Allow the casserole to cool for a few minutes before slicing it into squares for serving.
Enjoy your delicious breakfast!
Tasty Sausage Egg and Cheese Breakfast Casserole
Ingredients
For the egg base:
- 12 large eggs
- 3/4 cup whole milk
- 1 tsp salt
- 1/4 tsp ground black pepper
For the sausage mixture:
- 1 lb breakfast sausage
- 1 tbsp dried minced onion
For assembly:
- 1 cup shredded sharp cheddar cheese, divided
Instructions
- In a large skillet over medium heat, cook the breakfast sausage, breaking it up into small pieces as it cooks. Add the dried minced onion to the skillet and continue cooking until the sausage is well browned and no longer pink. Drain any excess fat if necessary.
- Crack the eggs into a large mixing bowl and whisk until smooth. Add the whole milk, salt, and ground black pepper, and whisk again until everything is well combined. I like to take my time whisking here to ensure the mixture is light and fluffy.
- Preheat your oven to 350°F (175°C). Grease a casserole dish with butter or nonstick spray. Add 3/4 of the cooked sausage with onion (from Step 1) to the bottom of the dish. Top this layer with half of the shredded sharp cheddar cheese.
- Pour the egg mixture (from Step 2) evenly over the sausage and cheese layers in the casserole dish. Place the casserole into the preheated oven and bake for 30 minutes, or until the eggs are mostly set in the center.
- After 30 minutes of baking, remove the casserole from the oven. Sprinkle the remaining shredded sharp cheddar cheese and the reserved cooked sausage with onion (from Step 1) over the top. Return the casserole to the oven and bake for another 10-15 minutes, until the cheese is well melted and the center is completely set. For a nice golden top, you can broil it for an extra minute or two—I always think this makes the dish look even more appetizing!
- Allow the casserole to cool for a few minutes before slicing it into squares for serving. Enjoy your delicious breakfast!
