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Hard-Boiled Egg and Sausage Breakfast Casserole Recipe

If you’ve been looking for a breakfast dish that combines hearty flavors with a comforting, homemade touch, you simply have to try this Hard-Boiled Egg and Sausage Breakfast Casserole Recipe. It’s packed with protein-rich hard-boiled eggs and savory breakfast sausage, layered with melty Cheddar cheese and a creamy, seasoned custard that brings everything together beautifully. This casserole is a delightful way to start the day, offering a crowd-pleasing option that’s easy to prepare yet impressive every time you serve it.

Hard-Boiled Egg and Sausage Breakfast Casserole Recipe - Recipe Image

Ingredients You’ll Need

The beauty of this Hard-Boiled Egg and Sausage Breakfast Casserole Recipe lies in its straightforward ingredients, each carefully chosen to build layers of flavor, texture, and richness. The balance between the creamy custard, chewy sausage, and tender eggs creates a truly satisfying dish that’s guaranteed to become a favorite.

  • 8 hard-boiled eggs, peeled and sliced: These offer a tender, protein-packed base that holds the casserole together.
  • 1/2 pound breakfast sausage, cooked and crumbled: Adds savory depth and a spicy kick that wakes up your taste buds.
  • 1 cup shredded Cheddar cheese: Brings a melty, sharp creaminess that elevates every bite.
  • 1/2 cup milk: Helps create the rich custard that soaks into the eggs and sausage, adding moisture and silkiness.
  • 1/2 cup heavy cream: Enhances the custard’s richness, making the casserole decadently creamy.
  • 1 teaspoon mustard powder: Provides a subtle tang that balances the dish’s richness.
  • 1/2 teaspoon salt: Essential for seasoning and bringing out all the flavors.
  • 1/2 teaspoon black pepper: Adds a gentle kick of warmth and spice.
  • 1/4 teaspoon garlic powder: Introduces a mellow, aromatic note that complements the sausage perfectly.
  • 1/4 teaspoon onion powder: Offers a subtle sweetness and depth that enhances the casserole’s overall profile.
  • 2 tablespoons butter: For greasing the baking dish and dotting on top, creating a golden, irresistible crust.

How to Make Hard-Boiled Egg and Sausage Breakfast Casserole Recipe

Step 1: Preheat and Prepare Your Dish

Start by setting your oven to 350°F (175°C). While it warms up, generously grease a 9×13-inch baking dish with butter; this step not only prevents sticking but also contributes to that delicious, golden crust you’ll love on the finished casserole.

Step 2: Layer the Eggs and Sausage

Now it’s time to build the foundation of your casserole. Arrange the sliced hard-boiled eggs evenly across the bottom of your prepared dish. Then scatter the cooked and crumbled breakfast sausage over the eggs, making sure each bite will have that savory meatiness we crave in breakfast.

Step 3: Whisk Together the Creamy Custard Mixture

In a mixing bowl, combine the milk, heavy cream, mustard powder, salt, black pepper, garlic powder, and onion powder. Whisk vigorously until everything is fully blended and smooth. This custard mixture is the magic binding agent that transforms individual layers into one cohesive, luscious casserole.

Step 4: Pour and Top with Cheese

Pour your creamy custard evenly over the layers of eggs and sausage, ensuring it seeps down between all the pieces. Then sprinkle the shredded Cheddar cheese generously over the top to create that stretchy, gooey layer everyone loves.

Step 5: Add Butter Dots and Bake

Dot the surface of the casserole with small pieces of butter. These little bursts of fat will melt during baking, helping to brown and crisp the top beautifully. Place the casserole in your preheated oven and bake for 25 to 30 minutes until it’s bubbly and golden on top.

How to Serve Hard-Boiled Egg and Sausage Breakfast Casserole Recipe

Hard-Boiled Egg and Sausage Breakfast Casserole Recipe - Recipe Image

Garnishes

To finish off this already delicious casserole, consider supporting it with fresh garnishes that bring brightness and contrast. Sprinkle chopped fresh parsley or chives over the top just before serving for a vibrant pop of color and subtle herbal notes. A dollop of sour cream or a drizzle of your favorite hot sauce can add creaminess or spice, elevating the dish even further.

Side Dishes

This casserole is a star on its own but pairs wonderfully with light, complementary sides. Consider serving it alongside fresh fruit salad for a sweet counterbalance or a simple arugula salad dressed with lemon vinaigrette to add a peppery freshness that cuts through the richness.

Creative Ways to Present

For a festive brunch, serve this casserole in individual ramekins instead of one large dish—this is perfect for portion control and adds a charming, personal touch. You can also top each serving with a slice of ripe avocado or a spoonful of salsa for an appealing, modern twist that keeps your guests coming back for seconds.

Make Ahead and Storage

Storing Leftovers

Once cooled, cover your leftover Hard-Boiled Egg and Sausage Breakfast Casserole Recipe tightly with plastic wrap or transfer to an airtight container. Refrigerate for up to 3 days to maintain freshness and flavor. This makes it a fantastic option for quick breakfasts during busy weekdays.

Freezing

If you want to prepare this casserole longer in advance, it freezes beautifully. Be sure to cool it completely, then wrap it tightly in foil and plastic wrap to prevent freezer burn. It will keep well for up to 2 months. When ready, thaw overnight in the fridge before reheating.

Reheating

To bring this casserole back to life, reheat individual portions in the microwave until warmed through, or place the whole dish (covered with foil) in a 350°F oven for about 15-20 minutes. The cheese will melt perfectly, and you’ll get that inviting golden crust all over again.

FAQs

Can I use different types of sausage?

Absolutely! While breakfast sausage adds classic flavor, you can swap in spicy chorizo, turkey sausage, or even vegetarian sausage to tailor the dish to your taste preferences or dietary needs.

What’s the best way to boil eggs for this casserole?

For perfectly cooked hard-boiled eggs that peel easily, place them in a pot of cold water, bring to a boil, then remove from heat and cover for about 10-12 minutes before cooling in ice water. This ensures firm but tender yolks ideal for layering.

Can I make this casserole dairy-free?

Yes! Substitute the milk and heavy cream with your favorite plant-based milks, such as oat or almond milk, and use dairy-free cheese alternatives to keep the dish creamy and flavorful.

Is this casserole suitable for meal prep?

Definitely. This Hard-Boiled Egg and Sausage Breakfast Casserole Recipe is perfect for batch cooking, and leftovers reheat beautifully for a hearty breakfast or brunch throughout the week.

Can I add vegetables to this casserole?

Feel free! Diced bell peppers, spinach, mushrooms, or onions all make wonderful additions to boost flavor and nutrition. Just sauté them lightly beforehand to avoid excess moisture in the casserole.

Final Thoughts

This Hard-Boiled Egg and Sausage Breakfast Casserole Recipe is one of those special dishes that feels like a warm hug in every bite. Its combination of creamy, cheesy richness, savory sausage, and satisfying eggs makes it a perfect choice for any morning occasion, from lazy weekend brunches to holiday gatherings. Give it a try—you’re going to love how effortlessly this recipe brings comfort and deliciousness straight to your table.

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Hard-Boiled Egg and Sausage Breakfast Casserole Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4 from 33 reviews
  • Author: Mary
  • Prep Time: 10 minutes
  • Cook Time: 30 minutes
  • Total Time: 40 minutes
  • Yield: 6 servings 1x
  • Category: Breakfast Casserole
  • Method: Baking
  • Cuisine: American

Description

This Hard-Boiled Egg Casserole is a hearty and comforting breakfast dish featuring layers of sliced hard-boiled eggs and savory breakfast sausage. Baked with a creamy mixture of milk, heavy cream, and seasonings, then topped with melted Cheddar cheese and butter, this casserole is perfect for a weekend brunch or a make-ahead meal that serves six.


Ingredients

Scale

Egg and Meat Layer

  • 8 hard-boiled eggs, peeled and sliced
  • 1/2 pound breakfast sausage, cooked and crumbled

Dairy and Seasonings

  • 1 cup shredded Cheddar cheese
  • 1/2 cup milk
  • 1/2 cup heavy cream
  • 1 teaspoon mustard powder
  • 1/2 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1/4 teaspoon garlic powder
  • 1/4 teaspoon onion powder
  • 2 tablespoons butter


Instructions

  1. Preheat and Prepare Dish: Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking dish thoroughly with butter to prevent sticking and add flavor.
  2. Layer Eggs and Sausage: Arrange the sliced hard-boiled eggs evenly on the bottom of the prepared baking dish. Then spread the cooked and crumbled breakfast sausage over the eggs to create a layered base.
  3. Mix Creamy Sauce: In a mixing bowl, whisk together the milk, heavy cream, mustard powder, salt, black pepper, garlic powder, and onion powder until fully combined to form a flavorful custard-like mixture.
  4. Assemble Casserole: Pour the milk and cream mixture evenly over the layered eggs and sausage in the dish. Next, sprinkle the shredded Cheddar cheese evenly on top to cover the surface.
  5. Add Butter Dots: Cut the butter into small pieces and dot the top of the casserole with these pieces to ensure a golden, buttery crust when baked.
  6. Bake: Place the casserole in the oven and bake for 25-30 minutes or until the casserole is bubbly throughout and the top is golden and slightly crisp.

Notes

  • For softer cooked sausage, avoid overcooking before assembling.
  • You can substitute Cheddar cheese with other cheeses like Monterey Jack or Swiss for different flavors.
  • This casserole can be prepared the night before and baked fresh in the morning for convenience.
  • Use a sharp knife to slice the hard-boiled eggs evenly for better layering.
  • Let the casserole cool slightly before serving to allow it to set for easier slicing.

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