If you crave a breakfast that’s hearty, satisfying, and packed with flavor, look no further than this Everything Bagel Breakfast Casserole. Inspired by the iconic bagel seasoning and all the things you love about weekend brunch, this dish brings together crisp edges of toasted bread, creamy cheese, savory sausage, and a rich egg custard—all crowned with that irresistible everything bagel seasoning. Whether you’re hosting brunch, meal prepping for the week, or wanting to wake up to something special, this casserole is the wake-up call your kitchen’s been waiting for.
Ingredients You’ll Need
Every ingredient in this recipe is thoughtfully chosen to pack a punch in every bite. From the crusty cubes of bread to the silky eggs and the savory hit of sausage or bacon, each addition layers on flavor, texture, and color. Here’s what you’ll need for your Everything Bagel Breakfast Casserole:
- 6 cups cubed bread: Sturdy bread (like bagels, sourdough, or French) holds up well and soaks up the egg mixture wonderfully.
- 8 large eggs: The backbone of the casserole, these provide structure and a luscious custardy texture.
- 2 cups milk: This blends with eggs for creaminess and ensures a moist, tender bite.
- 1 cup shredded cheddar cheese: Cheddar adds sharpness and melty goodness that’s cheesy in all the right ways.
- ½ cup cream cheese, cubed: Little pockets of creaminess pay homage to the classic bagel-and-spread combo.
- 1 small red onion, diced: Red onion brings a mild, almost sweet bite that balances the rich meats and cheeses.
- 1 cup cooked breakfast sausage or bacon, crumbled: Either works! The savory, salty meat is a delicious contrast with the creamy egg base.
- 2 tablespoons everything bagel seasoning: The key to bold, garlicky, toasty perfection in every bite.
- Salt and pepper to taste: A pinch of each brings all the flavors into focus.
- Optional: chopped chives for garnish: Adds a burst of color and fresh, mild onion flavor on top.
How to Make Everything Bagel Breakfast Casserole
Step 1: Preheat and Prep
Begin by preheating your oven to 350°F (175°C). Lightly grease a 9×13-inch baking dish with a bit of butter or nonstick spray to ensure easy serving later. This first step may seem simple, but it’s essential—the right temperature and a greased dish set you up for a flawless casserole with golden edges and an easy release.
Step 2: Prepare the Bread Base
Evenly spread your cubed bread or bagels in the prepared dish. Scatter half the shredded cheddar over the top. The bread forms the hearty base, soaking up all the good stuff you’ll add next, while the layer of cheese ensures creamy richness at every level.
Step 3: Cook the Meat and Onions
In a skillet over medium heat, cook your breakfast sausage or bacon until browned and crisp. Add the diced red onion and sauté for another 2–3 minutes until it softens and turns fragrant. Crumbling the meat finely ensures every bite has a bit of savory flavor, while the onions add a mellow, sweet finish as they cook. Spread this mixture evenly over your bread and cheese layer.
Step 4: Mix the Custard
In a large bowl, vigorously whisk the eggs with milk, everything bagel seasoning, and a good pinch each of salt and pepper. You want the eggs fully beaten until no streaks remain and the seasoning is well distributed—this ensures an even, flavorful custard that ties the whole casserole together.
Step 5: Assemble the Casserole
Carefully pour your egg mixture over the bread, meat, and onion layers, making sure everything gets a good soak. Dot the surface with cubes of cream cheese. These will melt into luxurious puddles throughout the casserole. Finish by sprinkling the remaining shredded cheddar cheese on top, giving you that tempting cheesy crust when baked.
Step 6: Bake to Perfection
Cover the casserole with foil and bake for 25 minutes to allow the custard to gently set. Then, remove the foil and bake another 15–20 minutes, until the eggs are fully cooked and the top is beautifully golden brown. This two-stage baking creates a dreamy texture—fluffy inside, just a touch crisp on the edges. Let it cool for about 5 minutes before slicing to make serving a breeze.
How to Serve Everything Bagel Breakfast Casserole
Garnishes
For a fresh, inviting touch, sprinkle chopped chives over the finished Everything Bagel Breakfast Casserole just before serving. Not only does this add cheerful color, but that pop of mild onion flavor is the perfect final flourish. A scatter of extra everything bagel seasoning or a dollop of sour cream wouldn’t hurt either!
Side Dishes
This hearty casserole is a meal on its own, but it pairs beautifully with a crisp green salad, roasted potatoes, or a fruit salad brimming with berries and citrus. If you’re hosting brunch, round out the menu with yogurt parfaits or a pitcher of fresh-squeezed juice to brighten every plate.
Creative Ways to Present
Cut the Everything Bagel Breakfast Casserole into bite-sized cubes for brunch buffets, or use a metal biscuit cutter to create perfect rounds for a more elegant presentation. For a grab-and-go format, scoop it into toasted bagel halves or breakfast sandwiches—imagine all those flavors tucked into a handy handheld treat!
Make Ahead and Storage
Storing Leftovers
If you happen to have leftovers, cover the baking dish tightly with foil or transfer individual slices to an airtight container. Store them in the refrigerator for up to 3 days. The flavors might deepen overnight, making second-day servings extra delicious.
Freezing
This casserole is freezer-friendly! Let the Everything Bagel Breakfast Casserole cool completely, then wrap portions individually in plastic wrap and foil, or use airtight containers. Freeze for up to 2 months—just be sure to label each package for easy grab-and-go breakfasts later.
Reheating
To reheat, you have options: for individual slices, microwave covered for 1–2 minutes until warmed through. For larger quantities, pop the casserole in a 350°F oven, covered, for about 15 minutes, or until hot. If reheating from frozen, thaw overnight in the fridge before warming for best texture.
FAQs
Can I use different types of bread or just bagels?
Absolutely! While everything bagels give you that signature flavor, any sturdy bread—like French bread, brioche, or sourdough—works well. The most important thing is to use bread that won’t get soggy after soaking up the custard.
Is it possible to prepare Everything Bagel Breakfast Casserole the night before?
Yes, and it’s one of the best features of this casserole! Assemble everything, cover, and refrigerate overnight. In the morning, let it sit at room temperature while the oven preheats, then bake as directed. This makes for extra-easy, stress-free mornings.
Can I make it vegetarian?
Definitely! Just skip the sausage or bacon, or swap in sautéed mushrooms, spinach, or roasted bell peppers for a veggie-packed version that’s just as hearty and flavorful.
What’s the best way to prevent a soggy casserole?
Using day-old or slightly dried-out bread helps, since it soaks up the egg mixture without turning mushy. Make sure not to add extra liquid and bake uncovered for the last stretch for that golden, crisped top.
How do I know when the casserole is done baking?
The casserole is ready when the center is set (not jiggly) and the top is golden brown. You can test by inserting a knife in the middle; if it comes out mostly clean (a little moisture is okay), it’s good to go!
Final Thoughts
There’s a reason Everything Bagel Breakfast Casserole is such a crowd pleaser—it’s cozy, customizable, and always a showstopper at the breakfast table. Whether you’re meal prepping, treating loved ones, or hosting a special brunch, this dish promises comfort and flavor in every forkful. Give it a try and see just how magical breakfast can be!