Oh, breakfast casserole – my absolute savior on those chaotic mornings when I’ve got a house full of hungry people! I swear by this dish, especially during holiday gatherings when my nieces and nephews come tumbling into the kitchen at all hours. The beauty of this breakfast casserole is how it magically transforms simple ingredients into something everyone loves. I first made it years ago for Christmas morning when I realized I’d forgotten to buy pancake mix (oops!), and now it’s become our family tradition. You can throw in whatever you’ve got in the fridge – that half-used bag of cheese, leftover veggies, even that lonely sausage patty from yesterday’s breakfast. It’s the perfect breakfast solution that lets you enjoy your coffee while it bakes to golden perfection.

Why You’ll Love This Breakfast Casserole
Listen, I know mornings can be crazy – that’s exactly why this breakfast casserole has become my go-to lifesaver! Here’s why you’ll fall in love with it too:
- Effortless prep – Just layer everything in one dish while your coffee brews. No fancy techniques, no stress.
- Feeds a crowd – My recipe serves 8 hungry people (or 4 very hungry teenagers – trust me, I’ve tested this!).
- Totally customizable – Swap sausage for bacon, add veggies, use different cheeses… it’s like a choose-your-own-adventure breakfast!
- Makes mornings magical – That heavenly smell wafting through the house? Pure comfort food magic that makes everyone gather at the table.
Honestly, the hardest part is waiting for it to bake while your stomach growls!
Ingredients for the Perfect Breakfast Casserole
Okay, let’s talk ingredients – the building blocks of breakfast magic! I’ve made this casserole more times than I can count, and I’ve learned exactly what makes it sing. Here’s everything you’ll need (and why each one matters):
- 6 large eggs – The heart of the whole dish! I always use large because medium ones just don’t give that same rich, custardy texture.
- 2 cups milk – Whole milk makes it extra creamy, but 2% works in a pinch. Just don’t skimp – this keeps everything moist.
- 1 tsp salt & ½ tsp black pepper – Trust me, season well! The eggs need this flavor boost.
- 1 lb breakfast sausage – Cooked and crumbled. My secret? Brown it until just crispy for amazing texture.
- 2 cups shredded cheddar – Sharp cheddar gives the best flavor punch, but any melty cheese works.
- 6 slices bread – Cubed. Day-old works best – it soaks up the egg mixture like a dream without getting mushy.

That’s it! Simple, right? But when these humble ingredients come together… wow. Just wait till you smell it baking!
How to Make a Breakfast Casserole Step by Step
Alright, let’s get cooking! This breakfast casserole comes together in simple steps that even my sleep-deprived self can manage at 7 AM. I’ll walk you through each one so your casserole turns out perfect – golden, fluffy, and oh-so-satisfying. Here’s my foolproof method:
Prepping the Ingredients
First things first – prep is key! I like to get everything ready before mixing. Cube your bread into 1-inch pieces (day-old works best – it won’t turn mushy). Cook the sausage until it’s nicely browned and crumbled – I usually do this while my coffee’s brewing. For the eggs, crack them into a big mixing bowl and give them a good whisk with the milk, salt, and pepper. Pro tip: warm your milk slightly first if you have time – it helps everything blend together smoother!
Assembling the Breakfast Casserole
This is where the magic happens! Grease your 9×13 baking dish (don’t skip this!). Layer your bread cubes first, then sprinkle the sausage evenly over top. Next comes the cheese – I like to reserve a handful to sprinkle on top later. Now, slowly pour that beautiful egg mixture over everything. Here’s the important part: use a fork to gently press down so all the bread gets soaked. You’ll see it start absorbing the liquid right away! Top with that reserved cheese for a gorgeous golden crust.

Baking and Serving Tips
Bake at 350°F for about 45 minutes – but here’s how to know it’s really done: the edges should be golden brown and the center should jiggle just slightly when you shake the pan (like set scrambled eggs). If it’s still too wobbly, give it 5 more minutes. Always let it rest for at least 5 minutes after baking – this helps it firm up beautifully for clean slices. Serve it warm with a fresh fruit salad or just by itself – it’s that good!
Tips for the Best Breakfast Casserole
After making this breakfast casserole more times than I can count (seriously, my family requests it weekly!), I’ve learned all the little tricks that take it from good to “can I have seconds?” amazing. Here are my hard-earned secrets:
- Bread matters! Stale bread absorbs the egg mixture perfectly without turning to mush. If you don’t have day-old bread, toast fresh slices lightly first – it makes all the difference.
- Don’t skimp on seasoning. Eggs need flavor! I always add an extra pinch of salt and sometimes a dash of garlic powder or paprika for depth.
- Let it rest overnight for ultimate flavor. Assemble everything the night before (except the egg mixture – add that in the morning), cover, and refrigerate. The bread soaks up all that goodness!
- Cheese on top AND bottom. I layer some cheese under the bread cubes too – it creates these delicious melty pockets throughout the casserole.

Trust me, these small tweaks make your breakfast casserole the talk of the brunch table!
Variations to Customize Your Breakfast Casserole
One of my favorite things about this breakfast casserole is how easily you can make it your own! Over the years, I’ve played around with so many variations – some were hits (hello, spicy jalapeño version!), others… well, let’s just say my family politely ate them. Here are my absolute favorite twists that always get rave reviews:
- Vegetarian delight: Skip the sausage and load up with sautéed mushrooms, spinach, and bell peppers. I sometimes add feta cheese for extra tang – it’s so good my meat-loving brother asks for seconds! Check out my vegetarian breakfast ideas for more inspiration.
- Southwest fiesta: Swap cheddar for pepper jack, add a can of drained green chiles, and top with avocado and salsa after baking. The spicy kick wakes up sleepy taste buds!
- Everything bagel style: Use everything bagel seasoning in the egg mixture and swap regular bread for everything bagels (lightly toasted first). Top with extra seasoning before baking – it’s like your favorite bagel shop in casserole form!
The possibilities are endless – that’s the beauty of this recipe! Once you master the basic version, you’ll start seeing customization opportunities everywhere.
How to Store and Reheat Breakfast Casserole
Oh, you’ll love this part – breakfast casserole is one of those magical dishes that actually gets better as leftovers! Here’s how I keep it tasting fresh and delicious:
For refrigeration, just let it cool completely (about 30 minutes), then cover tightly with foil or transfer to an airtight container. It’ll keep beautifully in the fridge for up to 3 days. Want to freeze it? Slice into portions first, wrap each piece in plastic wrap, then foil – they’ll stay perfect for up to 2 months!
When reheating, I always prefer the oven (350°F for 15-20 minutes) because it brings back that wonderful crispy top. But on rushed mornings? The microwave works too – just zap it in 30-second bursts with a damp paper towel over it to prevent drying out. Either way, you’ll have a hot, satisfying breakfast in minutes!
Nutritional Information for Breakfast Casserole
Okay, let’s talk numbers – but don’t worry, I promise this breakfast casserole is worth every delicious calorie! Here’s the nutritional breakdown per serving (and remember, my servings are generous because nobody wants a skimpy breakfast!):
- Calories: About 350 – perfect fuel to start your day
- Protein: 20g (thanks to all those eggs and sausage!)
- Carbs: 15g – not too heavy, just enough energy
- Fat: 22g (hey, that’s where all the flavor comes from!)
Now, here’s my kitchen truth – these numbers can change based on your ingredients. Use turkey sausage instead of pork? Fewer calories. Add extra veggies? More nutrients. That’s the beauty of homemade – you control what goes in! Just enjoy every cheesy, satisfying bite.
Frequently Asked Questions About Breakfast Casserole
I’ve gotten so many questions about this breakfast casserole over the years – and honestly, I love chatting about it! Here are the ones that pop up most often, along with my tried-and-true answers:
Can I make breakfast casserole ahead of time?
Absolutely! In fact, I often assemble everything (except the egg mixture) the night before. Just cover and refrigerate, then pour the eggs over in the morning and bake. The bread soaks up even more flavor this way – it’s my secret for extra deliciousness!
What can I use instead of sausage?
Oh, the options are endless! Bacon works great (cook it crispy first), or try diced ham. For a vegetarian version, sautéed mushrooms or even meatless crumbles are fantastic. My niece loves when I add diced roasted potatoes – gives it a hearty hash brown vibe!
How do I know when the casserole is done baking?
Look for golden edges and a center that jiggles just slightly when you gently shake the pan – like perfectly set custard. If it’s still super wobbly, give it 5 more minutes. And remember, it’ll continue setting as it rests!
Can I freeze breakfast casserole?
You bet! I slice it into portions, wrap each tightly in plastic then foil, and freeze for up to 2 months. To reheat, pop it straight from freezer to oven at 350°F for about 25 minutes. Tastes just as good as fresh – maybe even better because breakfast is ready instantly!
What kind of bread works best?
My go-to is day-old French bread or sourdough – they hold up beautifully. But honestly? I’ve used everything from sandwich bread to croissants (so rich and buttery!). Just avoid super soft fresh bread unless you toast it first.

Breakfast Casserole
Ingredients
Equipment
Method
- Preheat the oven to 350°F (175°C). Grease a 9×13-inch baking dish.
- In a large bowl, whisk together the eggs, milk, salt, and pepper.
- Layer the bread cubes, cooked sausage, and cheese in the baking dish.
- Pour the egg mixture evenly over the bread and sausage.
- Bake for 45 minutes or until the eggs are set and the top is golden brown.
Nutrition
Notes
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