Bagel Breakfast Casserole with Sausage, Egg, and Cheese

Make-aheadBreakfast Casserole

Take your favorite egg and cheese bagel sandwich and turn it into a make-ahead breakfast casserole instead! This breakfast bake is an easy crowd-pleaser.

Photography Credit: Marta Rivera

I’ll be the first one to admit that I am not a breakfast person. The thought of having to wake up and begin working to feed myself (or others) just makes me want to roll over and go back to sleep.

Just give me a cup of coffee around 10 a.m. and I’m good to go.

That was fine and dandy when I was single, but now I have a big, burly husband and two tweenagers who are perpetually hungry. They just so happen to think breakfast is the best meal of the day.

Easy-to-assemble morning meals, like this Breakfast Bagel Casserole with Sausage, Egg, and Cheese, are now a necessary thing for me.

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Turn bagels into a make-ahead casserole

Instead of laboring over individual sandwiches for the entire family, I’ve tossed together the ingredients from my favorite breakfast bagel sandwich and baked them together in a casserole.

The slightly sweet, chewy bagels get crisp right along the edge of the casserole, while the hints of sage in the sausage and the sharp cheddar meld to give a savory tang that makes it a hallmark breakfast dish.

The beauty of a breakfast bake

Breakfast bakes like this make mornings bearable because they require minimal effort to prepare, and they can often be prepped the evening before you want to enjoy them. They are ideal if you have to feed a morning crowd.

The night before, just chug along with the recipe’s instructions, wrap the dish in foil, and put it into the refrigerator. In the morning, pull the dish from the fridge and let it warm for a few minutes on the counter while the oven preheats (this takes the chill off). Then just put it into your hot oven, and bake as directed.

Overnight Breakfast Casserole with Sausage

Adapt this recipe to your own tastes!

This casserole is not only economical, it’s one of the most filling and versatile meals I’ve ever created.

Alter the flavors by using chorizo instead of sage sausage; or use Swiss cheese instead of cheddar. If you’re allergic to seeds, swap out the everything bagels for the plain or whole wheat instead. The combos you can create from this basic recipe are virtually endless.

More Great Breakfast Casseroles!

Bagel Breakfast Casserole with Sausage, Egg, and Cheese Recipe

  • Prep time: 20 minutes
  • Cook time: 45 minutes
  • Yield: 8 servings


  • 6 (20-ounce package) everything bagels
  • 7 large eggs
  • 2 1/2 cups half-and-half
  • 1 teaspoon kosher salt
  • 1/8 teaspoon black pepper
  • 1/2 tablespoon vegetable oil
  • 1 pound breakfast sausage (I used sage-flavored)
  • 1 red bell pepper, diced (about 1 cup)
  • 1 small yellow onion, peeled and diced (about 1 cup)
  • 2 tablespoons chopped fresh parsley, divided
  • 3 cups (8 ounces) sharp cheddar cheese, shredded and divided


1 Prep the oven: Preheat your oven to 350°F, then lightly grease or butter a 13”x 9” casserole dish.

2 Prep the bagels: Using a serrated bread knife, cut each bagel into bite-size pieces. I like to cut the bagel in half (from top to bottom) and then cut each half into fourths. Try to cut the bagel into pieces that are no larger than an inch.

Breakfast Casserole with Bread cut the bagels up

3 Make the egg mix and combine with the bagels: In a large mixing bowl, whisk together the eggs, half-and-half, salt, and pepper until no yolk is visible and the mixture is smooth.

Add the cut bagels to the egg mixture and, using a large spoon or spatula, toss to coat the bread in the liquid. Set this to the side to allow the bread to soak while you brown the sausage.

Sausage Breakfast Casserole with Bagels whisk together egg and half and half

Overnight Breakfast Casserole with Sausage add the egg to the bagels

3 Cook the sausage, onion, and pepper: Heat the oil in a large skillet over medium-high heat until it begins to shimmer (this should take about a minute).

Add the breakfast sausage to the pan and begin to brown it. Break up the sausage into small chunks with a wooden spoon until the sausage is about the size of pistachios. It should not look minced.

Once the sausage has cooked through and browned (about 5 minutes), create a well in the center of the pan using your spoon. Add the diced peppers and the onions. Stir them with the sausage and cook the mixture for an additional 3 to 4 minutes, or until the veggies are glossy and soft.

Drain any excess fat by straining the mixture in a colander, then allow the mixture to cool for 5 minutes. This is a great time to shred your cheese if you haven’t already.

Breakfast Egg Casserole with Sausage cook the sausage Sausage and Egg Breakfast Casserole cook the peppers and onions and sausage together

4 Combine the sausage, bagel and egg mixture. Once your sausage mix has cooled slightly, add it to the bagel and egg mixture. Add 1 tablespoon of the parsley and 2 cups of the cheddar cheese. Toss the ingredients together to combine evenly.

Easy Breakfast Casserole with Sausage add the cheese to the mixture

5 Assemble the casserole: Pour the mixture into the prepared casserole dish and cover with aluminum foil.

Make-ahead step: At this point, you can place the dish into the refrigerator overnight and bake in the morning. Once you’re ready to bake, remove the casserole dish twenty minutes prior to baking, then proceed as follows.

6 Bake the casserole: Bake, covered with foil, in the preheated oven for 20 minutes and then carefully remove the pan from the oven and remove the foil.

Return the pan to the oven and bake for an additional 25 minutes or until the middle is no longer jiggling, and the surface has browned.

7 Cool and serve: Remove the pan from the oven and immediately top with the remaining cheese and parsley. Allow the casserole to cool for 10 minutes prior to serving.

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Marta Rivera

Marta Rivera is trained chef with over 20 years in the culinary field and the blogger behind Sense & Edibility. She graduated from the Baltimore International Culinary College with degrees in Culinary Arts and Classical Pastries. Her cookbook is Taste and See Cooks.

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20 Comments / Reviews

No ImageBagel Breakfast Casserole with Sausage, Egg, and Cheese

Did you make it? Rate it!

  1. Margaret

    Amazing!! Best egg bake I’ve ever had. Added chopped cooked bacon, otherwise followed the recipe. It was my Christmas morning breakfast.


  2. Bill Case

    Made it for my family Christmas this year. It was a big hit


  3. Chris

    This is delicious and sooo easy. Thank you for sharing this!


  4. Sue

    Very good. I did change it up quite a bit…
    Since it was just my son and I, I only cut up two everything bagels and used a brownie instead of cake pan. I still used 7 eggs and about a cup or so of cream, with the seasonings. I used sauted red onion, red and yellow sweet peppers and spinach ( I didn’t have parsley). I split the casing on three bratwurst and sauted after veggies were close to done. For cheese, I used what I had on hand, shredded parm/mozzarella mix. I mixed cheese with soaking bagels. I scooped them out and placed on the bottom of the dish , then mixed in the sauted veggies/sausage in with left over egg mix and then pored over the bread.
    Added more cheese last 15 minutes of cooking. And it was very well received! Delicious! This is a very adaptable recipe.


  5. Rachael N

    This turned out fantastic! Only change I made was using 9 eggs vs. the 7. Made the entire recipe the night before. Covered tightly with foil. Baked an additional 10 minutes after uncovering (since I used 2 extra eggs). Super puffy when I took it out of the oven!
    My only recommendation is to bake it on a foil covered baking sheet to keep the bottom of your oven clean, as some of this deliciousness spilled over in baking, leaving an oily mess in the bottom! Saving recipe to make again!


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Bagel Breakfast Casserole with Sausage, Egg, and Cheese