Hard-Boiled Egg and Sausage Breakfast Casserole Recipe

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The Comfort of Hard-Boiled Egg and Sausage Breakfast Casserole Recipe

There’s something so warmly satisfying about a breakfast casserole that blends familiar ingredients into a cozy, one-dish meal. I love how the Hard-Boiled Egg and Sausage Breakfast Casserole Recipe brings bright, tender eggs together with the savory richness of sausage and a touch of melty cheese. It’s that perfect weekend wake-up you didn’t know you needed, with aromas filling the kitchen and an inviting golden crust to dig into.

When I first tried this casserole, I was struck by how simple it was to assemble yet how deeply comforting the final dish felt. You’ll notice the layer of sliced hard-boiled eggs brings a velvety texture that contrasts beautifully with the slightly crisp sausage. Plus, the custard made from milk, cream, and hearty spices seals in all that satisfaction, creating a dish that feels both indulgent and nourishing.

This breakfast casserole is a winning staple for anything from brunch gatherings to an easy weekday start. I aim to share that homey vibe with every bite, and I hope you’ll feel the same inviting ease when making it yourself.

Ingredient Guide

• Hard-boiled eggs: Provide tender, subtly rich layers and added protein. Quick to prep or use pre-cooked.
• Breakfast sausage: Adds savory depth and a touch of spice. Use pork, turkey, or a plant-based alternative for swaps.
• Shredded Cheddar cheese: Brings sharp, creamy richness that melts beautifully on top.
• Milk and heavy cream: Combine for a silky custard base that keeps the casserole moist and tender.
• Mustard powder: Adds a subtle tang and complexity without overpowering.
• Salt and pepper: Essential for seasoning and balancing flavors.
• Garlic and onion powders: Give quiet aromatic warmth that rounds out the taste.
• Butter: Used for greasing and dotting on top to achieve that perfect golden, buttery crust.

Prep Before You Begin

Before you dive in, make sure all your ingredients are ready to go—this mise en place smoothes out your cooking flow. Preheat your oven to 350°F (175°C) early, so it’s perfectly hot when you’re ready to bake. Cooking the sausage ahead and having those hard-boiled eggs peeled and sliced saves you steps later. Greasing your baking dish well with butter not only prevents sticking but also adds an inviting depth to the casserole’s crust.

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

Let’s walk through each step, so you can appreciate the layers and textures as you build this comfort food classic.

1. Preheat and Prepare Dish: Begin by heating your oven to 350°F (175°C). Use the butter to grease a 9×13-inch baking dish generously—I find this adds a subtle richness to the crust that makes all the difference.
2. Layer Eggs and Sausage: Carefully arrange the sliced hard-boiled eggs in an even layer across the bottom of your dish. Their shiny, smooth edges set the foundation. Then, scatter the cooked and crumbled breakfast sausage on top, ensuring an even distribution so every bite packs that meaty, savory punch.
3. Mix Creamy Sauce: Whisk together milk, heavy cream, mustard powder, salt, black pepper, garlic powder, and onion powder in a bowl. This custard-like mixture is the heart of your casserole’s luscious texture—a velvety blanket that will soak into the layers and balance the flavors beautifully.
4. Assemble Casserole: Pour the cream mixture gently over your layered eggs and sausage, allowing it to seep down and fill every nook. Then, spread the shredded Cheddar cheese evenly on top. As it melts, the cheese forms a golden, bubbly lid that’s lightly crisp on top yet gooey beneath.
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Expert Tips to Nail It

Small adjustments that make a big difference in texture, timing, and flavor so your Hard-Boiled Egg and Sausage Breakfast Casserole Recipe turns out reliably amazing.

5. Add Butter Dots: Chop your butter into small bits and dot these over the cheese layer. This little trick encourages a beautifully golden, buttery crust that’s irresistibly crisped in places—don’t skip it!
6. Bake: Pop the casserole into your preheated oven. Bake for 25 to 30 minutes, watching for bubbling edges and a top that’s golden and lightly crisp. The filling should feel set but still moist when you gently shake the pan.

Creative Variations for Hard-Boiled Egg and Sausage Breakfast Casserole Recipe



• Add diced bell peppers and onions for a colorful veggie boost that adds sweetness and crunch.
• Swap cheddar for pepper jack or gruyère for a different cheese dimension—smoky or nutty notes.
• Use spicy chorizo instead of breakfast sausage for a fiery twist your guests won’t forget.
• Stir in fresh herbs like chives, parsley, or thyme for bursts of herbal brightness.
• Top with sliced avocado or a dollop of sour cream when serving for cooling contrast.

Storage, Freezing & Reheating

• Refrigerate: Store leftovers in an airtight container for up to 3 days. The flavors deepen as it rests, making it an even better next-day breakfast.
• Freeze: Wrap the casserole tightly and freeze for up to 2 months. Thaw overnight in the fridge before reheating for best texture retention.
• Reheat: Warm portions in the microwave or oven (350°F for 15-20 minutes) until hot and bubbly. Add a splash of milk if it seems a bit dry.

Hard-Boiled Egg and Sausage Breakfast Casserole Recipe FAQs

• Can I use raw eggs instead of hard-boiled? This recipe relies on sliced hard-boiled eggs for texture—raw eggs would create a different custard. If you want a baked egg custard, look for strata or frittata recipes.
• Is breakfast sausage necessary? You can substitute with cooked bacon, ham, or a vegetarian sausage alternative without losing much flavor impact.
• Can I prepare this the night before? Absolutely! Assemble it, cover it with foil, and refrigerate. Bake fresh in the morning for a stress-free breakfast.
• What if I don’t have mustard powder? You can omit it or use a teaspoon of prepared mustard, but mustard powder adds a subtle tang that enhances the overall depth.
• How do I get a crispier top? Using butter dots helps, but broiling for 1-2 minutes at the end also adds extra golden crispness—just watch it closely!
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Hard-Boiled Egg and Sausage Breakfast Casserole Recipe



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4.7 from 75 reviews

This Hard-Boiled Egg and Sausage Breakfast Casserole combines the richness of hard-boiled eggs and savory breakfast sausage with a creamy, cheesy custard, baked to a golden perfection. It’s a hearty and satisfying dish perfect for brunch or a cozy weekend breakfast.

• Author: Olivia
• Prep Time: 10 minutes
• Cook Time: 30 minutes
• Total Time: 40 minutes
• Yield: 6 servings
• Category: Breakfast Casserole
• Method: Baking
• Cuisine: American

Ingredients

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

• Ensure hard-boiled eggs are fully cooled and peeled before slicing to maintain shape and texture.
• Customize the cheese by substituting Cheddar with Monterey Jack, mozzarella, or your favorite melting cheese for variation.
• For a spicier kick, add red pepper flakes or diced jalapeños to the sausage layer.
• This casserole can be prepared the night before; assemble and refrigerate, then bake in the morning with an additional 5-10 minutes if chilled.
• Use a non-stick or glass baking dish to prevent sticking and ease cleanup.