On those mornings when a sit-down brunch feels necessary but time is short, this easy Breakfast Casserole comes to the rescue. Savory sausage and sharp cheddar cheese combine with eggs for a hearty, satisfying meal. You can assemble it the night before, and simply pop it in the oven when you wake up. It’s the ultimate fuss-free centerpiece for a leisurely weekend gathering.
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Your New Favorite Morning Ritual
- Effortless Morning Prep – Assemble everything the night before for a stress-free morning.
- Hearty, Comforting Flavor – A savory baked egg and sausage morning bake that truly satisfies.
- Crowd-Pleasing Simplicity – It effortlessly feeds a group, making it perfect for weekend breakfast ideas.
- Perfect Make-Ahead Meal – This make ahead breakfast casserole gets even better after soaking overnight.
🍴 You Will Find in This Article
What You’ll Need for Your Breakfast Casserole
For the base
- Day-Old Bread – Cubed into ½-inch pieces; it soaks up the custard beautifully.
- Sharp Cheddar Cheese – Shredded and divided; it adds that irresistible cheesy pull.
For the filling
- Bulk Breakfast Sausage – Get that savory flavor by browning it well.
- Yellow Onion – Finely diced for a sweet, subtle bite.
- Red Bell Pepper – Finely diced for a pop of color and sweetness.
For the custard
- Eggs – Large and whisked until smooth; they’re the star of the dish.
- Whole Milk – Adds creaminess to the custard for the perfect texture.
- Kosher Salt – Essential for balancing all the flavors.
- Black Pepper – Freshly ground for a little warmth and depth.
- Dry Mustard Powder – Just a teaspoon for a subtle tangy kick.
For greasing
- Unsalted Butter – Use this to grease your baking dish for a non-stick finish.
Let’s Talk Timing for This Cozy Casserole
I know how precious weekend mornings are, so I designed this Breakfast Casserole recipe to be wonderfully hands-off. You’ll spend about 25 minutes getting everything ready—which feels more like a relaxing putter in the kitchen than hard work.
Then, the oven takes over for about 55 minutes, filling your home with the most incredible aroma. In under an hour and a half total, you have a warm, fluffy baked egg dish with bread that’s perfect for a slow weekend brunch. It’s the kind of meal that lets you sip your coffee while it bakes, which is my idea of a perfect morning. If you love recipes that do most of the work for you, you might also enjoy my easy Sheet Pan Frittata.
Breakfast Casserole
Ingredients
- 1 tablespoon unsalted butter
- 1 pound bulk breakfast sausage
- 1 medium yellow onion finely diced
- 1 red bell pepper finely diced
- 8 large eggs
- 2 cups whole milk
- 1 teaspoon kosher salt
- 0.5 teaspoon freshly ground black pepper
- 1 teaspoon dry mustard powder
- 6 cups cubed day-old bread about ½-inch pieces
- 2 cups shredded sharp cheddar cheese divided
Method
- Preheat your oven to 350°F (175°C) and grease a 9×13-inch baking dish with the 1 tablespoon of unsalted butter.
- In a large skillet over medium-high heat, cook 1 pound of bulk breakfast sausage, breaking it up with a spoon until it is browned and no longer pink, which should take about 8-10 minutes. Use a slotted spoon to transfer the cooked sausage to a paper towel-lined plate to drain, leaving about 1 tablespoon of drippings in the skillet.
- Add the finely diced yellow onion and red bell pepper to the skillet with the drippings. Sauté over medium heat for about 5-7 minutes, stirring occasionally, until the vegetables have softened.
- In a large mixing bowl, whisk together the 8 large eggs, 2 cups of whole milk, 1 teaspoon of kosher salt, ½ teaspoon of black pepper, and 1 teaspoon of dry mustard powder until the mixture is completely smooth and uniform.
- Spread the 6 cups of cubed bread evenly in the bottom of the prepared baking dish. Top with the cooked sausage and sautéed vegetable mixture. Sprinkle 1 ½ cups of the shredded cheddar cheese over the top.
- Slowly and evenly pour the egg mixture over the contents in the baking dish, ensuring all the bread is moistened. Gently press down on the top with a spatula to help the bread absorb the liquid. Let the dish stand for 10 minutes so the bread can soak up the custard.
- Sprinkle the remaining ½ cup of shredded cheddar cheese over the top. Bake in the preheated oven for 45-55 minutes, or until the casserole is puffed, the center is fully set (doesn’t jiggle when shaken), and the top is a deep golden brown.
- Remove the casserole from the oven and let it rest on a wire rack for 10 minutes before slicing and serving. This allows the layers to set for clean cuts.
Nutrition
Private Notes
Thoughtful Tips for Special Diets
I love that this easy Breakfast Casserole is so adaptable. If you’re sugar conscious or looking for more blood sugar friendly options, a few simple tweaks can make it work beautifully for you. I often bake for friends with different dietary needs, and it’s all about keeping the comfort while making it work for everyone.
For a lower glycemic impact, you could use a whole-grain or sourdough bread. I also find that loading up on the peppers and onions adds great flavor and fiber. If you’re using sausage, just check the label for added sugars, as some brands can be surprisingly high. For another delicious, protein-packed breakfast option that’s naturally balanced, my Chickpea Egg Bowl is a fantastic choice.
My Favorite Pro-Tips for Perfection
After making this sausage Breakfast Casserole more times than I can count, I’ve picked up a few tricks that make it truly shine every single time. I want to share them with you so your first attempt is a roaring success!
- Flavor Swap: For a different twist, try using spicy Italian sausage or even crumbling in some cooked bacon. It creates a totally new flavor profile for this savory cheesy casserole with peppers.
- Diet Tweak: To lighten it up, swap the whole milk for 2% and use a reduced-fat cheese. It still gets wonderfully creamy and satisfying. For more high-protein inspiration, check out my High-Protein Breakfast ideas.
- Texture Fix: Don’t skip the 10-minute rest after pouring in the custard! This is the secret to a moist make-ahead sausage and egg bake where every bite is perfectly saturated.
- Storage Tip: This Breakfast Casserole reheats beautifully. Cover slices with a damp paper towel and microwave for 60-90 seconds to keep it from drying out. For another great make-ahead meal, my Overnight Oats are a lifesaver on busy mornings.
A Peek into the Nutrition of Our Casserole
This oven-baked cheesy breakfast strata isn’t just delicious; it’s also a wonderfully balanced way to start your day. The eggs provide high-quality protein to keep you full, while the vegetables add fiber and vitamins. I always feel good about serving a meal that’s made with real, wholesome ingredients.
Using day-old bread is a clever way to reduce food waste, and it gives the dish a fantastic texture. For more insights into crafting balanced meals, you can explore resources like the Jimmy Dean Sausage Brunch Casserole for another perspective on classic combinations. If you’re looking for other comforting, hearty dishes, my Cowboy Casserole is a family favorite. For a lighter take on eggs, my Caprese Frittata is fresh and flavorful.
How to Create a Lighter Breakfast Casserole
If you’re looking for a lighter version of this cozy classic, I’ve got you covered. I often make these tweaks myself, and honestly, the result is still incredibly satisfying. It’s all about smart swaps that don’t sacrifice flavor.
You can easily use turkey sausage instead of pork, and swap the whole milk for unsweetened almond or oat milk. Adding extra veggies like spinach or mushrooms is a great way to bulk it up with nutrients. For another fantastic breakfast that feels indulgent but is actually quite light, try my Avocado Toast. Or, for a handheld option, these Breakfast Tacos are always a hit.
My Favorite Way to Serve This Dish
I love serving this Breakfast Casserole straight from the oven onto a big wooden board in the center of the table. It feels so communal and inviting. I remember one snowy Saturday morning when I made this for my family, and we sat around the table for hours, talking and enjoying second helpings. The smell of the baked eggs and sausage filled the whole house with warmth.
It pairs beautifully with a simple green salad dressed with a light vinaigrette to cut through the richness, or with some fresh fruit on the side. For a truly decadent brunch, I’ll sometimes make my French Breakfast Puff for a sweet finish. If you have guests, this Smoked Salmon Benedict is another stunning brunch centerpiece.
Common Breakfast Casserole Mistakes to Avoid
I’ve learned a lot from my own kitchen experiments, so I want to help you sidestep a few common pitfalls. The goal is a perfectly set, flavorful casserole every time!
First, don’t use fresh, soft bread. Stale bread is key because it acts like a sponge and soaks up the egg mixture without turning to mush. Second, make sure you really whisk the eggs and milk together until they’re completely smooth—no stray strands of egg white. For more great tips on preparing dishes in advance, the My Baking Addiction Make-Ahead Tips are a wonderful resource. Another mistake is skipping the rest time after baking. Letting it sit for 10 minutes allows the layers to set, so you get clean slices. For another hearty dish that requires a similar patience-for-perfection approach, check out my Chorizo Sweet Potato Hash. And finally, don’t overbake! You want the center to be just set, not dry. For more inspiration on cheesy, satisfying bakes, have a look at the Jones Dairy Farm Cheesy Breakfast Casserole.
I learned about the rest time the hard way at a family gathering—I was too eager to serve it and the first slice was a delicious but saucy mess! Now I know better.
How to Store and Enjoy Your Casserole Later
One of the best things about this Breakfast Casserole is that it makes fantastic leftovers. I love having a few slices tucked away in the fridge for a quick and satisfying breakfast during the week. It brings back that cozy weekend feeling even on a busy Monday.
Let the casserole cool completely, then cover the baking dish tightly with plastic wrap or transfer individual portions to airtight containers. It will keep in the fridge for up to 4 days. You can also freeze it for up to 3 months; I like to slice it first and wrap each piece individually for easy reheating. For another make-ahead marvel that’s perfect for busy weeks, my Breakfast Burrito with Paneer is a freezer superstar. And if you love the combo of eggs and avocado, my Avocado Toast with Poached Egg is a quick and elegant option.
Try This Breakfast Casserole and Feel the Coziness
I truly hope this Breakfast Casserole becomes a cherished recipe in your home like it is in mine. There’s something so special about a meal that gathers everyone around the table with minimal stress. I remember my grandmother making a similar dish for holiday mornings, and now carrying on that tradition in my own kitchen fills me with so much joy.
It’s a recipe built for connection and comfort. So, gather your ingredients, preheat your oven, and get ready to create a wonderful memory. For more cozy breakfast and brunch ideas to round out your menu, explore my recipes for a hearty Chicken Casserole, a satisfying Arepa Breakfast Sandwich, and many more comforting dishes on the site.
More Cozy Breakfast Ideas You’ll Adore
If you loved this casserole, here are a few more of my favorite ways to start the day with warmth and flavor.
Sheet Pan Frittata – The easiest way to feed a crowd with minimal cleanup.
Breakfast Tacos – A fun, customizable morning feast everyone can get excited about.
Overnight Oats – Your ticket to a no-fuss, creamy, and delicious breakfast waiting for you in the fridge.
French Breakfast Puff – A sweet, cinnamon-sugary treat that feels like a warm hug.
Frequently Asked Questions
What are the ingredients for a breakfast casserole?
The core ingredients for this easy Breakfast Casserole are eggs, milk, day-old bread, breakfast sausage, cheese, onion, and bell pepper. They come together to create a simple, comforting bake. You can find the full, detailed list with measurements in the recipe above.
What is an Amish breakfast casserole?
An Amish breakfast casserole is a very hearty version that often includes hash browns or potatoes along with the eggs, sausage, and cheese. It’s known for being a filling, family-style meal. Our recipe is a simpler, bread-based version that captures that same comforting spirit.
[…] your coffee and relax. If you’re looking for other make-ahead marvels, you’ll love my Breakfast Casserole […]