Sausage Egg Breakfast Casserole

There’s a special magic to weekend mornings, and in my home, it often smells like this Hearty Sausage & Cheese Breakfast Casserole. The rich aroma of savory sausage, onions, and peppers is my favorite way to wake everyone up. It’s a feeling of comfort and togetherness in one dish. This satisfying sausage egg breakfast casserole promises a perfect start to any day, and it has the same crowd-pleasing power as my favorite zucchini casserole.

What Makes This Sausage Egg Breakfast Casserole So Special?

What I adore most is how this recipe delivers incredible flavor without demanding my entire morning. With just 20 minutes of prep, I can have it assembled and oven-ready. In 45 minutes, it emerges golden and bubbly. The savory ground pork sausage, the duo of sharp cheddar and nutty Gruyère, plus a kick from Dijon and paprika creates a truly special sausage egg breakfast casserole. It’s my secret weapon for holiday brunches and lazy Sundays alike.

The Key Ingredients You’ll Need

The magic is in the details. I always use a good quality ground pork sausage for its rich flavor. For the cheese, the duo of sharp cheddar and Gruyère is non-negotiable for me; it creates the perfect creamy texture and complex taste. Much like my favorite hashbrown casserole, using great ingredients makes all the difference.

Sofia

Hearty Sausage & Cheese Breakfast Casserole

A savory and satisfying breakfast casserole packed with seasoned sausage, fluffy eggs, and two types of cheese. It's the perfect make-ahead dish for weekend brunches or a simple, hearty start to the day.

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Prep Time 20 minutes mins

Cook Time 45 minutes mins

Total Time 1 hour hr 5 minutes mins

Servings: 8 servings

Course: Breakfast, Brunch, Main Course

Cuisine: American

Calories: 452

Ingredients Equipment Method Notes

Ingredients

  

• 1 lb ground pork sausage mild or hot
• 1 medium yellow onion chopped
• 1 red bell pepper chopped
• 6 slices bread such as sourdough or brioche, cubed into 1-inch pieces
• 10 large eggs
• 2 cups whole milk
• 1 tsp Dijon mustard
• 1 tsp dried mustard powder
• 1/2 tsp smoked paprika
• 1/2 tsp garlic powder
• 1/2 tsp salt
• 1/4 tsp black pepper freshly ground
• 1 1/2 cups shredded sharp cheddar cheese divided
• 1/2 cup shredded Gruyère cheese
• 2 tbsp fresh chives chopped, for garnish

Equipment

• 9x13 inch Casserole Dish
• Large Skillet
• Large mixing bowl
• Whisk

Method

 

• Preheat your oven to 375°F (190°C). Grease a 9x13 inch casserole dish with butter or non-stick spray.
• In a large skillet over medium-high heat, cook the ground sausage until browned, breaking it up with a spoon, about 5-7 minutes. Add the chopped onion and red bell pepper to the skillet. Continue to cook for another 5-7 minutes, until the vegetables are softened. Drain off any excess grease.
• Spread the cubed bread evenly across the bottom of the prepared casserole dish. Top the bread with the cooked sausage and vegetable mixture. Sprinkle 1 cup of the cheddar cheese and all of the Gruyère cheese over the sausage layer.
• In a large mixing bowl, whisk together the eggs. Add the whole milk, Dijon mustard, mustard powder, smoked paprika, garlic powder, salt, and black pepper. Whisk vigorously until everything is well combined and slightly frothy.
• Carefully and evenly pour the egg mixture over the layers in the casserole dish. Gently press down on the bread with a spatula to ensure it soaks up some of the egg mixture.
• Sprinkle the remaining 1/2 cup of cheddar cheese over the top. Bake uncovered for 40-50 minutes, or until the center is set (a knife inserted into the middle comes out clean) and the top is golden brown and bubbly. If the top starts to brown too quickly, you can loosely cover it with foil for the last 10-15 minutes of baking.
• Let the casserole rest for at least 10 minutes before slicing and serving. This allows it to set up properly. Garnish with fresh chopped chives before serving.

Notes

Make-Ahead Tip: This casserole is perfect for making ahead! Assemble everything through step 5, cover tightly with plastic wrap or foil, and refrigerate for up to 24 hours. When ready to bake, let it sit at room temperature for 20-30 minutes, then bake as directed (you may need to add 5-10 extra minutes to the baking time).
Variations: Feel free to add other vegetables like sautéed mushrooms or spinach (be sure to squeeze out excess moisture). You can also swap the sausage for cooked, crumbled bacon or diced ham. Use different cheeses like Monterey Jack or a Colby blend.
Storage: Store leftovers in an airtight container in the refrigerator for up to 4 days. Reheat individual slices in the microwave or in the oven at 350°F until warmed through.

How I Make Sausage Egg Breakfast Casserole

I always start by browning the sausage with the onion and bell pepper, letting those amazing flavors meld together. While that cools slightly, I whisk the eggs, milk, and all those wonderful seasonings—Dijon, mustard powder, and paprika. Then, it’s just a matter of layering the bread, sausage mixture, and cheeses in a dish before pouring the egg custard over everything. It’s a simple process that feels wonderfully rustic, not unlike assembling my go-to angel chicken rice casserole.

My Tips for the Perfect Outcome

• Don’t press the bread down too firmly; you want plenty of nooks for the custard.
• Let the casserole rest for 5-10 minutes after baking so it sets up perfectly.
• Day-old bread is fantastic here, as it absorbs the egg mixture even better.

How I Serve and Store This Dish

My favorite way to serve this is with a generous sprinkle of fresh chives for a pop of color and freshness. For leftovers, I let the casserole cool completely, then cover it tightly and refrigerate for up to 4 days. It reheats beautifully in the microwave or oven, making this a fantastic make-ahead sausage egg breakfast casserole that’s perfect for busy mornings.

FAQs

Can I prepare this casserole ahead of time?

Absolutely! This is one of my favorite make-ahead dishes. You can assemble the entire casserole the night before, cover it, and refrigerate. Just remember to add about 10-15 minutes to the baking time when you’re ready to cook it from cold the next morning.

What kind of sausage works best in this recipe?

I personally love using a classic ground pork sausage for its rich, savory flavor that really anchors the dish. However, you could easily substitute it with a spicy Italian sausage for more of a kick, or even a turkey sausage if you’re looking for a slightly leaner option.

Can I use different cheeses?

Of course! While the sharp cheddar and Gruyère combination is my go-to for its perfect melt and nutty flavor, feel free to experiment. Monterey Jack, Colby, or even a bit of pepper jack could add a delicious and unique twist to this sausage egg breakfast casserole.

Is it possible to make this Sausage Egg Breakfast Casserole vegetarian?

Yes, you certainly can. To make it vegetarian, simply omit the sausage and consider adding more vegetables like sautéed mushrooms, spinach, or zucchini to make it hearty. You might want to add a little extra seasoning, like smoked paprika, to compensate for the savory flavor.

Conclusion

This recipe is a staple in my home, a source of countless warm memories and happy mornings. I hope this Sausage Egg Breakfast Casserole brings the same joy and comfort to your kitchen. If you give it a try, I’d love for you to leave a comment below!

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