If you’re craving a comforting dish that perfectly blends protein-packed eggs, savory sausage, and melty cheddar cheese, you’re going to love this Hard-Boiled Egg and Sausage Cheddar Casserole Recipe. It’s an easy-to-make, savory casserole that’s as satisfying for breakfast as it is for brunch or a cozy dinner. The creamy, cheesy layers combined with hearty sausage and slices of hard-boiled eggs create a mouthwatering flavor and texture that feels both nostalgic and wonderfully indulgent. Trust me, once you try this recipe, it’ll become one of your favorite go-to meals for any occasion.

Ingredients You’ll Need
This Hard-Boiled Egg and Sausage Cheddar Casserole Recipe uses simple, wholesome ingredients that work together to create layers of flavor and a luscious texture. Each item is carefully selected to add richness, spice, or creaminess, making every bite a delightful experience.
- 8 hard-boiled eggs, peeled and sliced: The star ingredient, adding protein and a creamy texture.
- 1/2 pound breakfast sausage, cooked and crumbled: Brings savory, spicy depth and a meaty bite.
- 1 cup shredded Cheddar cheese: For that irresistible gooey, melty cheesy topping.
- 1/2 cup milk: Adds moisture and tenderness to the custardy base.
- 1/2 cup heavy cream: Makes the casserole rich and silky.
- 1 teaspoon mustard powder: Introduces a subtle tang that lifts the flavors.
- 1/2 teaspoon salt: Enhances all the delicious seasonings and ingredients.
- 1/2 teaspoon black pepper: Adds a gentle kick and warmth.
- 1/4 teaspoon garlic powder: Provides a savory garlic note without overpowering.
- 1/4 teaspoon onion powder: Gives a mellow onion flavor that melds beautifully with the sausage.
- 2 tablespoons butter: Used to grease the baking dish and dot the top, adding richness and a golden finish.
How to Make Hard-Boiled Egg and Sausage Cheddar Casserole Recipe
Step 1: Prepare Your Oven and Baking Dish
First things first, preheat your oven to 350°F (175°C). While it’s warming up, grab a 9×13-inch baking dish and grease it thoroughly with butter. This ensures your casserole won’t stick and will develop that irresistible golden crust on the edges.
Step 2: Layer the Eggs and Sausage
Next, place the sliced hard-boiled eggs evenly across the bottom of your greased dish. On top of the eggs, sprinkle the cooked and crumbled breakfast sausage. This layering creates distinct pockets of creamy egg and savory sausage, guaranteeing every forkful is satisfying.
Step 3: Whisk the Creamy Mixture
In a mixing bowl, combine the milk, heavy cream, mustard powder, salt, black pepper, garlic powder, and onion powder. Whisk them together until fully blended. This custardy mixture will soak into the eggs and sausage, binding the casserole with rich flavor.
Step 4: Assemble the Casserole
Pour the cream mixture evenly over the layered eggs and sausage, making sure every piece is gently coated. Then sprinkle the shredded Cheddar cheese generously over the top. The cheese will brown and bubble, adding a tasty, gooey crown to the dish.
Step 5: Add Butter and Bake
Dot the top of the casserole with small pieces of butter. This simple touch helps enhance browning and adds a lovely buttery richness. Place the casserole in the preheated oven and bake for 25-30 minutes, or until the cheese is bubbly and golden brown.
How to Serve Hard-Boiled Egg and Sausage Cheddar Casserole Recipe

Garnishes
When it’s time to serve, consider sprinkling some freshly chopped chives or parsley on top for a pop of color and fresh flavor. A light dusting of smoked paprika or a drizzle of hot sauce can also add an exciting twist that brightens up the creamy richness of the casserole.
Side Dishes
This hard-boiled egg and sausage cheddar casserole pairs wonderfully with simple sides like a crisp green salad or roasted veggies. You can also serve it alongside fresh fruit or warm, crusty bread to complete a well-rounded and satisfying meal.
Creative Ways to Present
For a brunch gathering, try serving the casserole in individual ramekins for a charming, personalized touch. Alternatively, slice the casserole into neat squares and arrange the pieces on a platter as a hearty finger-food option. This recipe is versatile enough to fit any dining style or occasion.
Make Ahead and Storage
Storing Leftovers
Leftovers from the Hard-Boiled Egg and Sausage Cheddar Casserole Recipe can be kept in an airtight container in the refrigerator for up to 3 days. Simply cover the casserole dish with foil if leaving it whole for easy storage.
Freezing
If you want to save the casserole for later, it freezes beautifully. Wrap the cooled casserole tightly with plastic wrap and then aluminum foil to prevent freezer burn. It will stay good for up to 2 months in the freezer.
Reheating
To reheat, thaw the casserole overnight in the fridge if frozen, then warm in a 350°F (175°C) oven for about 15-20 minutes or until heated through. You can also microwave individual servings for a quick meal during busy days.
FAQs
Can I use turkey sausage instead of breakfast sausage?
Absolutely! Turkey sausage is a leaner option that works well in this casserole, maintaining delicious flavor while reducing fat content.
Do I have to peel the hard-boiled eggs before slicing?
Yes, peeling the eggs before slicing is essential to keep the texture smooth and to allow the creamy custard to meld nicely with each slice.
Can I make this casserole gluten-free?
Yes, this recipe is naturally gluten-free as it contains no bread or flour. Just be sure any sausage you use is labeled gluten-free.
Is it possible to prepare this casserole the night before?
Definitely! You can assemble the casserole the night before, cover it tightly, and bake it fresh the next morning for a handy breakfast or brunch option.
What other cheeses can I substitute for Cheddar?
Cheese varieties like Monterey Jack, Colby, or even a sharp Asiago can be delightful alternatives, bringing different flavor profiles to the casserole.
Final Thoughts
This Hard-Boiled Egg and Sausage Cheddar Casserole Recipe is one of those comforting dishes that feels like a warm hug on a plate. Easy to prepare, packed with flavor, and so versatile, it’s perfect for any meal of the day. I can’t wait for you to try it and share it with your loved ones—you’ll wonder how you ever lived without it in your recipe repertoire!
Print
Hard-Boiled Egg and Sausage Cheddar Casserole Recipe
- Prep Time: 10 minutes
- Cook Time: 30 minutes
- Total Time: 40 minutes
- Yield: 6 servings
- Category: Breakfast Casserole
- Method: Baking
- Cuisine: American
Description
This Hard-Boiled Egg Casserole is a savory, comforting breakfast dish featuring layers of sliced hard-boiled eggs and seasoned breakfast sausage, topped with a creamy cheese sauce and baked to golden perfection. Perfect for family breakfasts or brunch gatherings, it combines simple ingredients for a hearty, protein-packed meal.
Ingredients
Eggs and Meat
- 8 hard-boiled eggs, peeled and sliced
- 1/2 pound breakfast sausage, cooked and crumbled
Dairy
- 1 cup shredded Cheddar cheese
- 1/2 cup milk
- 1/2 cup heavy cream
- 2 tablespoons butter (plus extra for greasing)
Spices
- 1 teaspoon mustard powder
- 1/2 teaspoon salt
- 1/2 teaspoon black pepper
- 1/4 teaspoon garlic powder
- 1/4 teaspoon onion powder
Instructions
- Preheat Oven and Prepare Dish: Preheat your oven to 350°F (175°C) and grease a 9×13-inch baking dish generously with butter to prevent sticking and add richness.
- Layer Eggs and Sausage: Arrange the sliced hard-boiled eggs evenly across the bottom of the baking dish, then sprinkle the cooked and crumbled breakfast sausage evenly over the eggs to create the first layers of the casserole.
- Mix Creamy Sauce: In a mixing bowl, whisk together the milk, heavy cream, mustard powder, salt, black pepper, garlic powder, and onion powder. This mixture will soak into the layers, imparting creamy flavor and seasoning.
- Assemble Casserole: Pour the prepared milk and cream mixture evenly over the layered eggs and sausage, ensuring thorough coverage. Then sprinkle the shredded Cheddar cheese evenly on top for a rich, melty finish.
- Add Butter Dots: Dot the top of the casserole with small pieces of butter to enhance browning and add extra flavor during baking.
- Bake Until Golden: Place the casserole in the preheated oven and bake for 25 to 30 minutes, until the mixture is bubbly around the edges and the cheese on top has melted and turned golden brown.
Notes
- For easier peeling, boil eggs with a splash of vinegar and shock in ice water immediately after cooking.
- Use spicy breakfast sausage for an added kick, or substitute with cooked bacon or ham if preferred.
- Feel free to add chopped vegetables like bell peppers or onions for more texture and flavor.
- This casserole can be assembled the night before and baked in the morning for convenience.
- Let the casserole rest for about 5 minutes after baking to set before serving.

