Sausage Egg and Cheese Breakfast Casserole has long been a beloved staple for weekend brunches, holiday mornings, and even busy weeknights when you crave something comforting and satisfying. There’s something undeniably magical about that harmonious blend of savory sausage, fluffy eggs, and gooey, melted cheese all baked together into one glorious, cohesive dish. It’s a breakfast that never fails to impress, offering a delightful textural contrast with every forkful. What truly elevates this classic, however, is its incredible adaptability. While the core combination is perfection, the beauty of a good Sausage Egg and Cheese Breakfast Casserole lies in its ability to be customized with your favorite vegetables, herbs, or even different types of cheese, making each iteration a unique culinary adventure. Prepare to fall in love with this ultimate breakfast indulgence.

Ingredients:
- 1 lb Breakfast Sausage
- 1 tbs Dried Minced Onion
- 1 Dozen Eggs
- 3/4 c Whole Milk
- 1 tsp Salt
- 1/4 tsp Ground Black Pepper
- 1 c Grated Sharp Cheddar Cheese (divided)
Preparation Steps
Step 1: Browning the Sausage and Aromatics
The foundation of a truly satisfying Sausage Egg and Cheese Breakfast Casserole is flavorful sausage. Begin by breaking apart your 1 lb of breakfast sausage into a large, cold skillet. Place the skillet over medium heat. As the sausage begins to warm, use a spatula or spoon to crumble it into bite-sized pieces. Continue to cook, stirring occasionally, until the sausage is fully browned and no pink remains. This process typically takes about 8-10 minutes. Once the sausage is browned, carefully drain off most of the rendered fat, leaving just a tablespoon or two in the skillet to help sauté the onion. This step is crucial for a less greasy casserole and to ensure the texture is just right.
Now, add 1 tablespoon of dried minced onion directly into the skillet with the browned sausage. Stir well and continue to cook for another 1-2 minutes, just until the onion becomes fragrant and slightly softened. The dried minced onion will rehydrate in the residual fat and the juices from the sausage, infusing a subtle but essential onion flavor throughout the casserole. Be careful not to burn the onion, as this can impart a bitter taste. Once the onion is fragrant, remove the skillet from the heat and set it aside to cool slightly. This brief cooling period will prevent the hot sausage mixture from scrambling the eggs prematurely when you combine them.
Step 2: Crafting the Egg Custard
While the sausage mixture is cooling, it’s time to prepare the creamy egg base. In a large mixing bowl, crack open your entire dozen eggs. You want to ensure a rich and substantial custard that will bind all the ingredients together beautifully. Add 3/4 cup of whole milk to the eggs. The milk adds essential moisture and creaminess to the casserole, preventing it from becoming too dense or dry. Next, season the mixture with 1 teaspoon of salt and 1/4 teaspoon of ground black pepper. The salt enhances all the flavors of the ingredients, while the black pepper adds a subtle warmth and complexity.
Whisk the eggs, milk, salt, and pepper together vigorously with a whisk or a fork until they are thoroughly combined and slightly frothy. You want a homogenous mixture with no streaks of egg white or yolk visible. A well-whisked egg mixture is key to an evenly cooked and smooth casserole. Once everything is well incorporated, set this bowl aside. It’s ready to receive the savory sausage mixture and the cheesy goodness.
Step 3: Assembling the Casserole
Now comes the exciting part: bringing all the components together. Take your slightly cooled sausage and onion mixture and carefully add it into the large bowl with the whisked egg custard. Ensure you’ve drained any excess fat from the sausage if you didn’t do so in Step 1, as too much fat can make the casserole greasy. Gently stir the sausage and onion mixture into the egg custard until it’s evenly distributed.
Next, it’s time to incorporate the cheese. Add 3/4 cup of your grated sharp cheddar cheese into the bowl with the sausage and egg mixture. Reserve the remaining 1/4 cup of cheddar cheese for topping. Gently fold the cheese into the mixture. Don’t overmix; you just want to distribute it evenly throughout the ingredients. The cheese will melt into the casserole as it bakes, adding a delicious, gooey layer of flavor. This blend of savory sausage, aromatic onion, creamy egg, and melted cheddar is what makes this Sausage Egg and Cheese Breakfast Casserole so incredibly irresistible.
Step 4: Baking to Golden Perfection
Preheat your oven to 350 degrees Fahrenheit (175 degrees Celsius). While the oven is heating, lightly grease a 9×13 inch baking dish with butter or non-stick cooking spray. This step is important to prevent the casserole from sticking to the dish and makes for easier cleanup. Pour the entire contents of the mixing bowl evenly into the prepared baking dish. Gently spread the mixture to ensure it fills the dish without overflowing.
Now, take the reserved 1/4 cup of grated sharp cheddar cheese and sprinkle it evenly over the top of the casserole. This creates a beautiful golden-brown crust as it bakes and adds an extra layer of cheesy indulgence. Place the baking dish on the center rack of your preheated oven. Bake for 45-55 minutes, or until the casserole is set and the edges are golden brown. You can check for doneness by inserting a knife or toothpick into the center; it should come out clean. If the top starts to brown too quickly, you can loosely tent it with aluminum foil.
Step 5: Resting and Serving
Once your Sausage Egg and Cheese Breakfast Casserole has reached golden perfection, carefully remove it from the oven. It will be very hot! Let the casserole rest for at least 10-15 minutes before slicing and serving. This resting period is essential. It allows the casserole to set up properly, making it much easier to cut clean portions and preventing it from falling apart. If you try to serve it immediately, it will likely be too soft and gooey. During this resting time, the residual heat will continue to cook the center gently, ensuring it’s perfectly cooked through.
After resting, you can slice it into generous squares. This Sausage Egg and Cheese Breakfast Casserole is wonderfully versatile and can be served on its own, with a side of toast, fresh fruit, or even some crispy bacon. It’s perfect for a leisurely weekend brunch, a make-ahead breakfast for busy weekdays, or even a comforting dinner. The combination of savory sausage, fluffy eggs, and melted cheddar cheese is a classic for a reason, and this recipe delivers every time. Enjoy the deliciousness!

Conclusion:
And there you have it! Your delicious Sausage Egg and Cheese Breakfast Casserole is ready to be enjoyed. We’ve walked through each step together, from browning the sausage to achieving that perfectly set, golden-brown casserole. This recipe is a fantastic way to start your day, whether it’s a busy weekday morning or a leisurely weekend brunch. Its comforting flavors and satisfying texture make it a crowd-pleaser for all ages.
For serving, this casserole is wonderful on its own, but it also pairs beautifully with a side of fresh fruit, a crisp green salad, or even some crispy hash browns. Don’t be afraid to experiment with variations! Consider adding sautéed bell peppers and onions for extra flavor and color, or perhaps some chopped spinach for a touch of green goodness. You could also swap out the sausage for crumbled bacon or even diced ham. The beauty of this Sausage Egg and Cheese Breakfast Casserole is its adaptability.
I encourage you to give this recipe a try. It’s relatively simple to prepare and the results are incredibly rewarding. Imagine waking up to the aroma of this savory casserole baking in your oven – it’s a true treat!
Frequently Asked Questions:
Can I make this Sausage Egg and Cheese Breakfast Casserole ahead of time?
Absolutely! You can assemble the entire casserole the night before and refrigerate it. When you’re ready to bake, simply take it out of the refrigerator about 30 minutes before you plan to put it in the oven, and then bake as directed, potentially adding a few extra minutes to the baking time.
What kind of sausage works best?
Mild or hot pork breakfast sausage is a classic choice and works wonderfully. However, you can also use turkey sausage or even Italian sausage for a different flavor profile. Just be sure to drain off any excess grease after browning.
How do I prevent the eggs from becoming rubbery?
The key is not to overbake the casserole. Once the center is just set and no longer liquid, it’s ready. The eggs will continue to cook slightly as the casserole rests after baking. Using a moderate oven temperature also helps achieve a tender, creamy texture.

Easy Beef Sausage Egg Cheese Casserole Recipe
A simple and delicious beef sausage, egg, and cheese casserole perfect for breakfast or brunch.
Ingredients
-
1 lb Beef Breakfast Sausage
-
1 tbs Dried Minced Onion
-
1 Dozen Eggs
-
3/4 c Whole Milk
-
1 tsp Salt
-
1/4 tsp Ground Black Pepper
-
1 c Grated Sharp Cheddar Cheese (divided)
Instructions
-
Step 1
Brown the beef sausage in a skillet over medium heat, crumbling it into bite-sized pieces. Drain most of the rendered fat. Add dried minced onion and cook for 1-2 minutes until fragrant. Set aside to cool slightly. -
Step 2
In a large bowl, whisk together the dozen eggs, whole milk, salt, and black pepper until well combined and slightly frothy. -
Step 3
Add the cooled beef sausage and onion mixture to the egg custard. Gently stir to combine. Stir in 3/4 cup of the grated cheddar cheese. -
Step 4
Preheat oven to 350°F (175°C). Grease a 9×13 inch baking dish. Pour the mixture evenly into the dish. Sprinkle the remaining 1/4 cup of cheddar cheese over the top. -
Step 5
Bake for 45-55 minutes, or until set and golden brown. Check for doneness with a knife. If browning too quickly, tent with foil. -
Step 6
Let the casserole rest for 10-15 minutes before slicing and serving.
Important Information
Nutrition Facts (Per Serving)
It is important to consider this information as approximate and not to use it as definitive health advice.
Allergy Information
Please check ingredients for potential allergens and consult a health professional if in doubt.




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