There are days when only a hearty, comforting breakfast can get you going—and this Sausage Breakfast Casserole is the one you can count on. If you’re prepping for Sunday brunch, Christmas morning, or a make-ahead weekday breakfast, this casserole brings everything you love in one warm, cheesy, savory bite.

The first time I made this, I was amazed by how something so simple could taste so indulgent. It layers fluffy eggs, golden-brown sausage, tender potatoes or bread, and gooey cheese into one unforgettable dish. And the best part? You can prep it ahead and pop it in the oven the next morning.

If you’re craving something satisfying that pleases both picky eaters and hungry houseguests, keep reading—because this one-pan wonder is about to become your new breakfast go-to.

Recipe Snapshot

Category	Details
Yield	1 (9×13-inch) casserole dish
Serving Size	1 slice (1/8 of casserole)
Prep Time	15 minutes
Cook Time	45 minutes
Total Time	1 hour
Calories per Serving	~360
Primary Cooking Method	Baking
Occasion	Holiday Brunch, Potluck
Diet Type	High-Protein
Make-Ahead Friendly	Yes
Freezer Friendly	Yes

Calories are approximate and may vary depending on exact ingredients used.

Sausage Breakfast Casserole Recipe

Recipe by Angela JonesCourse: BreakfastCuisine: AmericanDifficulty: Easy

Servings

slice

Prep time

minutes

Cooking time

minutes

Calories

360

kcal

This Sausage Breakfast Casserole is the ultimate crowd-pleaser. It’s rich, savory, and filled with protein to keep you energized all morning long.

With layers of juicy sausage, fluffy eggs, melty cheese, and either golden hash browns or rustic bread, every bite delivers maximum flavor.

It’s easy enough for beginners, customizable for dietary needs, and makes cleanup a breeze. Plus, it can be prepped the night before, making it a lifesaver on busy mornings or when entertaining guests.

This recipe proves that a satisfying breakfast doesn’t need to be complicated to be absolutely delicious.

Ingredients

1 pound breakfast sausage (pork or turkey)
6 large eggs
2 cups whole milk
1/2 teaspoon salt
1/4 teaspoon black pepper
1/2 teaspoon garlic powder
1/2 teaspoon onion powder
3 cups cubed bread (French or sourdough) or 3 cups frozen hash browns
1 1/2 cups shredded cheddar cheese (or cheese of your choice)
2 tablespoons chopped fresh parsley (optional)

Directions

Brown the Sausage
Heat a large skillet over medium heat. Add your breakfast sausage and cook it thoroughly, breaking it up into crumbles. Stir occasionally to ensure even browning. This step usually takes about 7–10 minutes. Once done, transfer the sausage to a plate lined with paper towels to drain excess grease.
Mix the Eggs and Seasonings
In a large mixing bowl, crack six large eggs. Add 2 cups of whole milk, then season with salt, black pepper, garlic powder, and onion powder. Whisk the mixture vigorously until the eggs are fully beaten and the spices are evenly distributed.
Build the Layers
Grease a 9×13-inch baking dish with butter or cooking spray. Layer the base with cubed bread or hash browns. Distribute the cooked sausage evenly over the base layer. Then, sprinkle shredded cheese generously across the top.
Pour the Egg Mixture
Slowly pour the egg and milk mixture over the layers in the baking dish. Use a rubber spatula to press down gently so the bread or potatoes soak in the liquid. This ensures your casserole has a cohesive texture after baking.
Soak and Rest
Cover the casserole with foil or plastic wrap and refrigerate for at least 30 minutes. For best results, let it rest overnight. This allows the eggs to fully soak into the bread or potatoes, giving you a creamy, cohesive final product.
Bake to Perfection
Preheat your oven to 350°F (175°C). Remove the casserole from the fridge and allow it to come to room temperature for about 10–15 minutes. Bake, covered with foil, for 30 minutes. Then remove the foil and continue baking for another 15–20 minutes until the top is golden and the center is firm to the touch.
Rest and Slice
After baking, let the casserole rest on the counter for 5–10 minutes. This helps the layers set and makes slicing easier. Top with chopped parsley if desired. Slice into 8 servings and enjoy warm.

Extra Tips for Casserole Success

Use stale or day-old bread for better absorption and texture.
Add veggies like bell peppers, spinach, or onions to sneak in extra nutrition.
For extra creaminess, substitute part of the milk with heavy cream.
Want a spicier version? Use hot sausage and pepper jack cheese.
Don’t rush the resting time after baking—it ensures clean slices.

Equipment List

9×13-inch baking dish
Large skillet
Mixing bowls
Whisk
Measuring cups and spoons
Rubber spatula
Aluminum foil

What Makes This Casserole So Special?

This dish is comfort food at its easiest. It takes kitchen staples you likely already have—eggs, sausage, cheese, and bread or potatoes—and turns them into a dish that tastes like something from your favorite diner. Whether you’re using bulk breakfast sausage or turkey sausage, cheddar or Monterey Jack, it’s endlessly customizable. It’s also a one-dish recipe with minimal cleanup, perfect for busy cooks who still want to serve something memorable.

Make-Ahead Tips

You can assemble the casserole the night before and refrigerate it overnight. Simply bake it in the morning while you get ready.

Alternatively, freeze the unbaked casserole by wrapping it tightly with foil and plastic wrap. Thaw it in the fridge overnight before baking as usual.

Storage Instructions

Refrigerator: Keep leftover slices in an airtight container for up to 4 days.
Freezer: Store fully cooled slices in freezer-safe bags for up to 2 months.
Reheating: Warm individual servings in the microwave for 1–2 minutes or in a 350°F oven until heated through.

Frequently Asked Questions

Can I make this casserole dairy-free?
Yes! Substitute plant-based milk and vegan cheese to make it dairy-free.

Can I swap the meat?
Ground chicken, veggie crumbles, or even chopped bacon work beautifully.

Why did my casserole come out runny?
You may have added too much milk or skipped the soak time. Make sure the casserole sits before baking.

Is it okay to bake it straight from the fridge?
Yes, but allow the dish to come closer to room temperature to ensure even baking.

Ingredient Selection Tips

Sausage: Choose high-quality breakfast sausage or flavor-rich turkey sausage.
Bread or Hash Browns: Use firm, rustic bread or quality frozen hash browns for the best base.
Cheese: Shred your cheese fresh for the best melt and flavor.

Serving Suggestions

Serve with a side of fresh fruit or sliced avocado.
Drizzle with hot sauce or hollandaise for elevated flavor.
Offer alongside a simple green salad or roasted veggies.

Nutrition Information (Per Serving)

Nutrient	Amount
Calories	~360 kcal
Protein	17g
Carbohydrates	14g
Fat	26g
Fiber	1g
Sugar	2g
Sodium	~680mg

Values are estimates and will vary with ingredients used.

Final Thoughts: One Dish, Endless Possibilities

This sausage breakfast casserole is more than just a recipe—it’s a game-changer for mornings when you need something warm, filling, and satisfying. With its endless customizations and make-ahead convenience, it’s perfect for busy weekdays, holiday mornings, or potluck brunches.

Give it your personal touch and it’ll quickly become a breakfast staple that everyone asks for by name.

Sausage Breakfast Casserole Recipe That’ll Win Your Morning

Recipe Snapshot