As I was scavenging through my pantry one weekend, I stumbled upon a stash of stale bagels, and that’s when inspiration struck! Enter the Everything Bagel Casserole—a brilliant way to transform those neglected bagels into a cheesy, hearty breakfast delight. Not only is this dish a delicious nod to our favorite bagel flavors, but it’s also a lifesaver for busy mornings. Easy to prep the night before, this breakfast casserole embraces customization with toppings galore, making it a family-friendly favorite that everyone will appreciate. By the end of this post, you’ll be one step closer to elevating your morning routine. What toppings will you choose to make it uniquely yours? Let’s dive in!

Why Try This Everything Bagel Casserole?
Transformative: This casserole breathes new life into stale bagels, making them exciting and flavorful again.
Customizable Toppings: Whether you prefer crispy bacon or a gourmet touch of smoked salmon, the options are endless!
Quick Prep: Prep it the night before and simply pop it in the oven in the morning—perfect for busy days.
Crowd-Pleaser: With gooey cheese and familiar flavors, it’s sure to be a hit with family and friends alike. Don’t forget to pair it with a fresh fruit salad for a vibrant meal or explore more comforting recipes like the Ranch Chicken Casserole to keep your breakfast rotation exciting!
Everything Bagel Casserole Ingredients
• Gather all the essentials for a delicious morning surprise!
For the Casserole Base
- Everything Bagels – Cubed for texture and flavor; substitute with plain bagels and add your favorite everything seasoning for a classic touch.
- Large Eggs – Acts as a binder; reducing from 8 to 6 brings a lighter, less eggy flavor.
- Milk – Provides creaminess; any milk, whether dairy or non-dairy, works beautifully in this Everything Bagel Casserole.
- Cream Cheese – Adds richness and a creamy texture; block cream cheese works best for easy mixing.
For the Flavor Boost
- Shredded Cheddar Cheese – Gives that gooey goodness; feel free to swap in mozzarella or your favorite cheese blend.
- Green Onions – Offers a fresh, zesty bite; chives can be a lovely substitute for a milder onion flavor.
- Salt and Pepper – Essential for seasoning; season to your taste for a perfectly balanced dish.
Optional Extras
- Cooked Bacon Bits – A savory addition; sprinkle on top before baking for extra crunch and flavor.
- Smoked Salmon – Elevate your casserole with gourmet flair if you’re feeling fancy!
- Herbs or Spices – Customize with any herbs or spices you love to add a personal touch to your breakfast experience.
Step‑by‑Step Instructions for Everything Bagel Casserole
Step 1: Preheat the Oven
Begin by preheating your oven to 350°F (175°C). This step is crucial, as a properly heated oven ensures even cooking and that your Everything Bagel Casserole rises beautifully. While the oven warms up, gather your 9×13 inch baking dish and spray it with non-stick cooking spray or grease it with butter to prevent sticking.
Step 2: Whisk the Egg Mixture
In a large mixing bowl, crack open 8 large eggs and whisk them together with 2 cups of milk, along with a generous pinch of salt and pepper. Whisk until the mixture is well-combined and slightly frothy, which should take about a minute. This egg mixture acts as the binder for your Everything Bagel Casserole, enriching it with flavor and texture.
Step 3: Add the Bagels and Cheese
Once your egg mixture is ready, gently fold in 4–5 cubed Everything Bagels along with 1 cup of shredded cheddar cheese and 4 ounces of cream cheese cut into small pieces. Continue folding until all ingredients are evenly distributed, ensuring every bagel piece is coated with the creamy mixture. You’ll notice it becoming thicker and richer as the bagels soak up the flavors.
Step 4: Incorporate Green Onions
Next, add in ¼ cup of chopped green onions to the bowl and fold them into the mixture. This fresh ingredient enhances the Everything Bagel Casserole with a burst of flavor and adds a pop of color. Give it a few gentle folds, making sure the green onions are evenly dispersed throughout the casserole base.
Step 5: Transfer to Baking Dish
Carefully pour the entire bagel mixture into your prepared baking dish, spreading it out evenly with a spatula. Make sure all the bagel cubes are submerged in the egg mixture for perfect texture. As you spread it, you’ll see that the dish fills up nicely—this is an indicator that you’re on your way to a fantastic breakfast!
Step 6: Bake to Golden Perfection
Place the baking dish in the preheated oven and bake for approximately 45 minutes. You’ll know the Everything Bagel Casserole is done when the top is golden brown and the center feels firm to the touch. For the best results, avoid opening the oven door while baking, which can cause the casserole to sink.
Step 7: Cool and Serve
Once your casserole is baked to perfection, carefully remove it from the oven and let it cool for about 5–10 minutes. This cooling time allows the casserole to set, making it easier to slice. As you prepare to serve, consider garnishing with additional green onions or any favorite toppings that add an extra flair to your Everything Bagel Casserole experience.

Storage Tips for Everything Bagel Casserole
Room Temperature: Allow the casserole to cool completely before storing. It’s best enjoyed fresh but can be left at room temperature for up to 2 hours.
Fridge: Store any leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the oven at 350°F (175°C) for best results and to maintain texture.
Freezer: To freeze, cut the casserole into portions and wrap each piece tightly in plastic wrap, then place in a freezer-safe bag. It can be frozen for up to 2 months.
Reheating: For reheating, thaw in the fridge overnight if frozen. Bake at 350°F (175°C) until warmed through, about 20-25 minutes, for the tastiest Everything Bagel Casserole experience.
What to Serve with Everything Bagel Casserole
Elevate your breakfast experience by pairing this delicious casserole with complementary sides that round out the meal beautifully.
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Crispy Bacon: The salty crunch of crispy bacon brings a delightful contrast to the creamy texture of the casserole. This classic combo is sure to satisfy your taste buds.
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Fresh Fruit Salad: A vibrant fruit salad adds a refreshing sweetness to balance the richness. Choose a mix of seasonal fruits for a pop of color and a nutritious boost.
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Avocado Toast: Creamy avocado toast offers a wholesome addition, enhancing the meal with healthy fats and additional textures. Top it with a sprinkle of salt or chili flakes for an extra kick.
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Roasted Veggies: A medley of roasted vegetables like bell peppers and zucchini brings earthy flavors to the table. Their slight caramelization complements the savory notes of the casserole beautifully.
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Herbed Yogurt Sauce: A dollop of herbed yogurt sauce introduces a zesty, creamy element that brightens the entire dish. This tangy sauce enhances the flavors while adding a touch of sophistication.
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Chilled Orange Juice: A glass of freshly squeezed orange juice provides the perfect citrusy lift! Its brightness contrasts beautifully with the hearty casserole, creating a well-rounded breakfast.
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Coffee or Tea: A warm cup of coffee or herbal tea brings comfort and warmth to your breakfast spread. Sipping on your favorite brew elevates the experience as you savor every bite.
Experiment with these delicious pairings to create the ultimate breakfast experience that your family will love!
Make Ahead Options
These Everything Bagel Casserole preparations are a game changer for busy mornings! You can assemble the casserole up to 24 hours in advance—simply prepare the mixture, pour it into your greased baking dish, and cover it with plastic wrap before refrigerating. This way, the bagels soak up all the delicious flavors overnight, resulting in a heartier dish when baked. When you’re ready to enjoy, just pop it into a preheated oven for about 45 minutes or until golden brown. For optimal quality, avoid adding any toppings until just before baking to keep everything fresh and flavorful. With this make-ahead option, you’ll have a delightful breakfast ready to go with minimal effort!
Expert Tips for Everything Bagel Casserole
Soak Time: Allow bagel pieces to soak in the egg mixture for at least 10 minutes for the best texture and flavor integration.
Make Ahead: Prepare the Everything Bagel Casserole the night before and refrigerate. This enhances flavor and makes morning baking a breeze!
Baking Dish Size: If you don’t have a 9×13 dish, use smaller dishes but adjust baking time, as they may cook faster.
Check doneness: Insert a knife in the center to check if it comes out clean, indicating the casserole is fully set and ready to enjoy.
Customize Flavors: Experiment with various toppings like fresh herbs or different cheese blends to put your unique spin on this delicious dish.
Everything Bagel Casserole Variations
Feel free to put your own spin on this delicious Everything Bagel Casserole—your creativity in the kitchen will lead to even more delightful discoveries!
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Dairy-Free: Substitute regular milk and cream cheese with almond or coconut milk and dairy-free cream cheese for a lighter version.
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Veggie-Packed: Add sautéed spinach, bell peppers, or mushrooms to boost nutrients and flavor. The extra veggies make the casserole even more filling and delicious.
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Spicy Kick: Toss in some diced jalapeños or a sprinkle of red pepper flakes for a spicy twist that creates a tantalizing flavor contrast.
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Herb Infusion: Mix in fresh herbs like dill or parsley for an aromatic lift that pairs beautifully with the bagel flavors. Fresh herbs can truly elevate your dish!
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Sweet Surprise: Drizzle a bit of maple syrup or mix in some raisins for a sweet twist that complements the savory elements beautifully.
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Meaty Goodness: Incorporate cooked sausage or chorizo for a hearty, protein-packed breakfast that will fuel your day. The savory meat adds depth and richness!
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Cheesy Delight: Swap cheddar cheese for a blend of gouda and mozzarella for a melt-in-your-mouth experience. The combination creates a wonderfully gooey texture that’s hard to resist.
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Seafood Twist: Include chunks of lox or crab meat to elevate your casserole to brunch-worthy status. The added seafood brings a luxurious flavor profile that’s perfect for special occasions.
With these variations, you can easily switch things up and enjoy a new casserole experience each time you prepare it. Looking for more comforting breakfast ideas? Check out our Ranch Chicken Casserole for a delightful spin on a classic dish!

Everything Bagel Casserole Recipe FAQs
What should I look for when selecting bagels for the casserole?
Absolutely! To get the best flavor and texture, choose bagels that are slightly stale but not moldy. They should be firm yet soft enough to cut without crumbling. If you can only find fresh bagels, consider toasting them lightly to mimic that stale texture.
How should I store the Everything Bagel Casserole after making it?
Great question! After it cools completely, store any leftovers in an airtight container in the fridge for up to 3 days. If you prefer to freeze it, make sure to cut it into individual portions, wrap each piece tightly in plastic wrap, and place in a freezer-safe bag. It can stay frozen for up to 2 months.
Can I freeze the Everything Bagel Casserole?
Absolutely! To freeze, wait until the casserole is completely cooled. Cut it into individual servings, wrap each slice tightly with plastic wrap, and place them in a freezer-safe bag or container. When you’re ready to enjoy, just thaw overnight in the fridge and bake until warmed through at 350°F (175°C) for about 20-25 minutes.
What if my casserole turns out too dry or too soggy?
Very! If your casserole is too dry, it might not have soaked long enough in the egg mixture, so be sure to allow the bagels to soak for at least 10 minutes. For a soggy casserole, you might have used too much milk or egg. Try reducing those ingredients slightly next time or increase the baking time by a few minutes.
Are there any dietary considerations for the Everything Bagel Casserole?
Yes! For those with dairy allergies, you can easily substitute dairy milk with nut or soy milk and replace cream cheese with a dairy-free alternative. For gluten-free options, use gluten-free bagels and adjust as needed. If you’re serving it to pets, avoid giving them any of the casserole, particularly due to the onion and potential seasonings that can be harmful to them.
Can I prepare the Everything Bagel Casserole the night before?
Absolutely! Preparing it the night before is not only convenient but also enhances the flavors. After assembling, cover and refrigerate it overnight. When morning comes, just pop it in the oven for a stress-free, delicious breakfast!

Everything Bagel Casserole: A Cozy Breakfast Favorite
Ingredients
Equipment
Method
- Preheat the oven to 350°F (175°C) and prepare your baking dish.
- In a mixing bowl, whisk together eggs, milk, salt, and pepper until frothy.
- Gently fold in cubed bagels, cheddar cheese, and cream cheese until well mixed.
- Incorporate green onions into the mixture.
- Pour the mixture into the prepared baking dish and spread evenly.
- Bake for approximately 45 minutes until golden brown and center is firm.
- Let cool for 5-10 minutes before serving and garnish if desired.

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