There’s something magical about the humble everything bagel-the perfect blend of savory seeds, a whisper of garlic, and a touch of onion that awakens the senses with every bite. Now, imagine waking up to those iconic flavors transformed into a warm, comforting casserole that’s as easy to make as it is irresistible to eat. Welcome to the world of the Ultimate Everything Bagel Casserole, where breakfast meets creativity and convenience in one hearty dish. Whether you’re feeding a crowd or craving a quick morning boost, this casserole promises to deliver that beloved everything bagel taste in a whole new, soul-satisfying way. Get ready to rise and shine with a flavor-packed start to your day!
Wake Up to Flavor: The Ultimate Everything Bagel Casserole invites you to experience a harmonious blend of savory spices and comforting ingredients that bring the beloved everything bagel to your breakfast table in a warm, cheesy, and unexpectedly delightful casserole form. This recipe is inspired by mornings filled with fresh bakery aroma and vibrant layers, turning the classic bagel experience into a crowd-pleasing, make-ahead dish perfect for gatherings or weekend indulgence.
Prep and Cook Time
- Preparation: 20 minutes
- Cooking: 45 minutes
- Total: 1 hour 5 minutes
Yield
- Serves 6-8 hearty portions
Difficulty Level
- Medium – approachable for those comfortable with layering and baking techniques
Ingredients
- 6 cups cubed day-old bagels (everything bagel preferred)
- 8 large eggs, lightly beaten
- 2 cups whole milk
- 1 cup sour cream
- 1/2 teaspoon kosher salt
- 1 teaspoon freshly cracked black pepper
- 1 tablespoon everything bagel seasoning blend (see notes for homemade version)
- 1 tablespoon chopped fresh chives
- 2 cups shredded sharp white cheddar cheese
- 1 cup shredded mozzarella cheese
- 6 slices thick-cut smoked bacon, cooked and crumbled
- 1 medium red onion, thinly sliced and sautéed until translucent
- 1 cup diced tomato, drained
- 2 tablespoons melted butter (for greasing)
Instructions
- Preheat your oven to 350°F (175°C). Lightly grease a 9×13-inch casserole dish with melted butter to ensure a golden crust without sticking.
- Prepare the custard: In a large bowl, whisk together eggs, whole milk, sour cream, kosher salt, black pepper, and 1 tablespoon of everything bagel seasoning. The seasoning kick builds authenticity and depth.
- Assemble the layers: Begin by spreading half of the bagel cubes evenly in the casserole dish. Sprinkle half of the cheeses (1 cup cheddar and 1/2 cup mozzarella), half of the crumbled bacon, sautéed onions, diced tomato, and half of the chopped chives over the bread.
- Create depth: Repeat the layering process with the remaining bagel cubes, cheese, bacon, onions, tomato, and chives. This layered approach ensures every bite sings with complex flavor and balanced texture.
- Pour the custard mixture evenly over the layered casserole. Gently press down with a spatula to submerge the bagel cubes, allowing the custard to absorb fully.
- Sprinkle a finishing touch of 1 tablespoon everything bagel seasoning across the top for a final burst of seasoning.
- Bake uncovered for 45 minutes until the custard is set, the cheese is bubbly and golden, and the edges turn irresistibly crisp.
- Rest for 10 minutes before serving to help the casserole set beautifully for clean slices.
Tips for Success
- Everything bagel seasoning: Combine toasted sesame seeds, poppy seeds, dried minced garlic, dried minced onion, and coarse sea salt if you want to make your own vibrant blend.
- Stale bread works best: Cubed day-old or slightly stale bagels soak up the custard without becoming mushy, creating a custardy yet structured texture.
- Bacon options: Substitute with turkey bacon or smoked ham for a different protein dimension.
- Make-ahead: Assemble the casserole the night before, cover tightly, refrigerate overnight, and bake the next morning for effortless hosting.
- Vegetarian variation: Omit bacon and add sautéed mushrooms or spinach to deepen the umami flavor.
Serving Suggestions
The casserole shines when topped with a dollop of fresh cream cheese or a smear of whipped chive butter. Serve alongside a crisp, peppery arugula salad dressed lightly with lemon vinaigrette for freshness. Garnish generously with extra fresh chives and a sprinkle of everything bagel seasoning. Pair with a chilled glass of orange juice or a robust brewed coffee to round out a memorable breakfast or brunch feast.

| Nutrient | Per Serving |
|---|---|
| Calories | 380 kcal |
| Protein | 22 g |
| Carbohydrates | 28 g |
| Fat | 18 g |
For more creative breakfast casseroles, visit our collection of easy breakfast casserole recipes. To learn about the nutritional benefits of eggs and dairy, see this detailed guide from Healthline.
Q&A
Q&A: Wake Up to Flavor – The Ultimate Everything Bagel Casserole
Q1: What is the “Everything Bagel Casserole” and why should I wake up to it?
A1: Picture the beloved everything bagel-the perfect blend of sesame, poppy seeds, garlic, onion, and salt-transformed into a warm, savory casserole that greets your morning with a burst of flavor. This dish combines that iconic seasoning with layers of bread, eggs, cheese, and your favorite breakfast fillings to create a hearty, crowd-pleasing wake-up call that’s as comforting as it is delicious.
Q2: How does the flavor profile of an everything bagel translate into a casserole?
A2: The everything bagel seasoning is a flavor bomb: nutty sesame seeds, crunchy poppy seeds, pungent onion, garlicky goodness, and a dash of salt. When scattered atop the casserole, it adds texture and an irresistible savory crunch that perfectly complements the creamy eggs and melty cheese inside, offering a delightful contrast in every bite.
Q3: Can I customize the casserole to suit my dietary preferences?
A3: Absolutely! The beauty of this casserole is its flexibility. Use gluten-free bagels or bread if needed, swap in dairy-free cheese or plant-based eggs, and add veggies like spinach, peppers, or mushrooms for extra nutrition. You can even incorporate proteins from smoked salmon to sausage, tailoring the dish to your tastes without losing that everything bagel essence.
Q4: What makes this casserole an “ultimate” breakfast option?
A4: Convenience meets gourmet here. You prep it the night before, pop it in the oven in the morning, and voilà-an impressive, flavorful meal that feeds a group or fuels your day solo. It captures the best components of breakfast-carbs, protein, savory spices-in one dish, providing lasting energy and satisfaction faster than any bagel in hand.
Q5: Any insider tips for perfecting the ultimate Everything Bagel Casserole?
A5: For maximum flavor, toast your bagel cubes lightly before layering-they’ll soak up the custard without turning soggy. Use a sharp cheddar or a combo of cheeses for depth, and don’t skimp on that everything bagel topping-it’s the crown jewel. Lastly, let the casserole rest for 10 minutes post-baking; it helps the flavors meld and makes slicing cleaner and easier.
Q6: Where can I find everything bagel seasoning if I want to try this recipe?
A6: You can find everything bagel seasoning in most grocery store spice aisles or specialty markets. Alternatively, it’s a snap to make at home by mixing equal parts sesame seeds, poppy seeds, dried minced onion, dried garlic, and coarse salt. Crafting your own lets you tweak the ratios to perfection.
Q7: Is this dish suitable for holidays or special brunches?
A7: Without a doubt! The ultimate everything bagel casserole feels celebratory yet approachable, making it a fantastic centerpiece for holiday mornings, weekend brunches, or any occasion when you want to impress without stressing. Serve it with fresh fruit, a dollop of sour cream or cream cheese, and a steaming mug of coffee for a truly memorable meal.
Feel ready to wake up to flavor? The ultimate everything bagel casserole awaits-your mornings will never be the same!
Key Takeaways
As the irresistible aroma of the Ultimate Everything Bagel Casserole fills your kitchen, it’s clear that breakfast has found its new champion. This savory blend of bold flavors and comforting textures turns the humble bagel into a star-studded morning masterpiece. Whether you’re fueling a busy weekday or savoring a leisurely weekend, this casserole promises to wake up your taste buds and stay with you long after the last bite. So grab your favorite everything bagels, gather your ingredients, and embark on a delicious adventure that redefines breakfast bliss-because mornings deserve to be as vibrant and flavorful as you are.