Dessert

Everything Bagel Breakfast Casserole Recipe

ByThomas Greene December 25, 2025December 25, 2025

Introduction

This Everything Bagel Breakfast Casserole is a savory morning delight that combines the flavors of your favorite everything bagels with eggs, cheese, and bacon. Perfect for a cozy weekend brunch or holiday gathering, it’s easy to prepare and sure to impress family and friends.

A white oval baking dish filled with a layered casserole, featuring golden-brown bread chunks on the top with a slightly crispy texture sprinkled with black and white seeds. These bread pieces are mixed with dollops of melted white cheese, patches of green bell pepper, red cherry tomato pieces, chopped green onions, and bits of crispy bacon scattered evenly across the top. The base layer appears creamy with a light golden tint, holding all ingredients together. The dish sits on a white marbled surface with two small white bowls nearby, one holding chopped green onions and the other a mix of black and white seeds. A textured gray and white cloth is partially visible at the bottom right corner. Photo taken with an iphone --ar 4:5 --v 7

Ingredients

3 day-old everything bagels*, cut into bite-size pieces (about 6 cups)
1 bell pepper, chopped
3/4 cup (113g) quartered cherry tomatoes (or chopped regular tomato)
6 slices cooked bacon, chopped
9 large eggs
1 and 1/2 cups whole milk
1 and 1/2 cups shredded cheese*
1/2 teaspoon ground mustard*
1/4 teaspoon salt
1/8 teaspoon freshly ground black pepper
6 ounces (170g) full-fat brick cream cheese, cut into bite-size pieces
Optional for garnish: everything bagel seasoning and scallions

Instructions

Step 1: Preheat the oven to 375°F (191°C). Generously grease a 9×13-inch baking pan or a similar size (about 3-quart) casserole dish.
Step 2: Layer the bagel pieces, chopped bell pepper, cherry tomatoes, and chopped bacon evenly in the prepared dish.
Step 3: In a large bowl, whisk together the eggs, whole milk, shredded cheese, ground mustard, salt, and black pepper until well combined. Pour this mixture evenly over the layered bagel and vegetables.
Step 4: Distribute the bite-size cream cheese pieces evenly over the top. If desired, sprinkle with everything bagel seasoning for extra flavor.
Step 5: Bake in the preheated oven for 40-50 minutes, or until the center is set and the edges are golden brown.
Step 6: Remove from the oven and let cool for 10 minutes. Garnish with chopped scallions if using. Slice and serve warm.

Tips & Variations

Use day-old bagels for best texture; fresh bagels may become too soft during baking.
Substitute the bacon with cooked sausage or smoked salmon for different flavor profiles.
Try different cheeses like Swiss or cheddar to customize the taste.
For a vegetarian version, omit the bacon and add sautéed mushrooms or spinach instead.
If you like a bit more tang, add a teaspoon of Dijon mustard to the egg mixture.

Storage

Store leftover casserole tightly covered in the refrigerator for up to 1 week. Reheat individual portions in the microwave until warmed through or in a preheated oven at 350°F (175°C) until heated evenly. Avoid freezing, as the cream cheese texture may change.

How to Serve

The image shows a close-up of a creamy casserole dish with several distinct layers and textures. At the base, there are golden brown chunks of bread sprinkled with black and white sesame seeds and poppy seeds, providing a crunchy texture. Scattered among the bread pieces are melted white cheese dollops, creating smooth, soft, and creamy patches. There are also pieces of green bell pepper and small bits of cooked bacon with a crispy, reddish-brown color. Bright green chopped scallions and small red tomato pieces are spread throughout, adding fresh pops of color. The creamy sauce covers everything, pulling all the ingredients together with a slightly melted, gooey texture. The dish is on a white plate set against a white marbled surface. photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I use other types of bagels?

Yes, you can use different bagel flavors, but the everything bagel seasoning adds a distinctive flavor that complements the casserole well. If using plain bagels, consider sprinkling everything bagel seasoning on top before baking.

Can I prepare this casserole ahead of time?

Absolutely! Assemble the casserole the night before, cover it tightly, and refrigerate overnight. When ready, bake it as directed, adding a few extra minutes if needed.