Bagel breakfast casserole is a simple, delicious way to kickstart your morning with nourishment. This scrumptious dish combines the flavors of savory bagels, sausage, and fresh vegetables, providing ample nutrition to get you through the day. The combination of ingredients in this nutritious casserole can be easily customized to suit your taste buds—from adding a variety of meats and cheeses to mixing up a few different types of veggies.
Jump to:
Bagel Breakfast Casserole
Our bagel breakfast casserole is an ideal option for those mornings when you don't have much time to prepare breakfast. The casserole is easy to assemble, requires minimal effort, and can be made the night before so it's ready to go in the morning. Plus, with its hearty ingredients and savory flavors, this dish will keep your stomach satisfied until lunchtime arrives.
If you love breakfast sandwiches but want something a bit less messy, this is a perfect solution! Sit down with a bowl of this sausage breakfast casserole to stay satisfied until lunch!
If you want something sweet instead of savory, check out our cinnamon roll casserole instead!
Ingredients
- 3 tablespoons olive oil (45ml)
- 4 plain bagels
- 6 large eggs
- 1 ⅔ cup milk (395ml)
- ½ pound breakfast sausage (250g)
- 1 bell pepper, chopped
- 1 ½ cups cremini mushrooms, sliced (150g)
- ½ teaspoon cayenne pepper (1g)
- 1 teaspoon salt (6g)
- 1 cup shredded mozzarella cheese (225g)
- 1 cup shredded gruyere cheese (118g)
Handy Kitchen Tools
How to Make a Bagel Breakfast Casserole with Sausage
Video Recipe:
If cooking immediately, preheat the oven to 350°F/180°C. Then, spray the baking dish with non-stick spray. If not baking yet, just prepare the pan and set it aside.
Now, you will begin cooking the vegetables in a large skillet. Heat the olive oil over medium heat with the mushrooms and bell peppers. Cook, stirring regularly, for 10 minutes, until the vegetables are softened.
Then, add the sausage, removed it from the casing, and cook the mixture for another 8 to 10 minutes. Stir the mixture regularly and break up the sausage as it cooks.
Once the sausage is cooked through, add the cayenne pepper and taste. If desired, add salt at this point.
Now, cut the bagels into small pieces around 1" to 1 ½" in size. Then add these to a large bowl along with the vegetables, sausage, and the1 cup of shredded or cubed gruyere. Stir this mixture together to combine evenly.
Pour the bagel and meat mixture into the baking dish you prepared earlier, and spread evenly.
Then, whisk the eggs, milk, and salt together in a large bowl, and pour it over the bagel and meat mixture. Push down the bagels so all are covered with eggs. Then, cover the baking dish with aluminum foil and refrigerate overnight, or until ready to bake. If not making it the next day, I recommend letting it sit for 30 minutes to soak before baking.
The next morning, preheat the oven to 350°F/180°C and let the pan sit at room temperature for 15 to 20 minutes before putting it into the oven, covered, for 45 minutes.
After 45 minutes, remove the casserole from the oven and sprinkle the top with the shredded mozzarella, then put it back into the oven, uncovered, and cook for another 25 minutes or until the egg is cooked through.
Serve hot with salsa or hot sauce if desired.
Printable Recipe:
Bagel Breakfast Casserole with Sausage and Mushrooms
Wake up to the savory flavors of this make-ahead bagel breakfast casserole loaded with sausage, mushrooms, and cheese. A delicious and easy breakfast option
Ingredients
- 3 tablespoons olive oil (45ml)
- 4 plain bagels
- 6 large eggs
- 1 ⅔ cup milk (395ml)
- ½ pound breakfast sausage (250g)
- 1 bell pepper, chopped
- 1 ½ cups cremini mushrooms, sliced (150g)
- ½ teaspoon cayenne pepper (1g)
- 1 teaspoon salt (6g)
- 1 cup shredded mozzarella cheese (225g)
- 1 cup shredded gruyere cheese (118g)
Instructions
- Spray a 9"x13" baking dish with non-stick spray. Set this aside.
- In a large skillet, add the olive oil over medium-high heat. Add the bell peppers and mushrooms to the skillet and cook, stirring regularly, for 10 minutes, until softened and reduced.
- To the skillet of vegetables, add the breakfast sausage, removed it from the casings, and cook for another 8 to 10 minutes. Stir regularly breaking up the sausage as it cooks.
- Add in cayenne pepper and taste. If needed, add salt to taste.
- While this is cooking, cut the bagels into pieces (1" to 1 ½").
- In a large bowl, add the bagel pieces, the cooked vegetables, and the sausage, along with the gruyere. Stir this together until combined.
- Pour this into the prepared baking dish.
- In a medium bowl, add the eggs, milk, and salt, whisking until combined.
- Pour the egg mixture over the bagel mixture, making sure all bagels are beneath the eggs and wet.
- Cover with aluminum foil, and refrigerate overnight.
- When ready to cook the casserole to serve, preheat the oven to 350°F/180°C.
- Once heated, bake, covered, for 45 minutes. Then remove the foil from the top, add the shredded mozzarella, then continue baking for another 25 minutes or until the egg is cooked through.
Notes
Replace the sausage with cooked bacon or ham if desired.
Recommended Products
As an Amazon Associate and member of other affiliate programs, I earn from qualifying purchases.
-
Anchor Hocking Oven Basics Glass Baking Dishes, Rectangular Value Pack, Set of 2 -
GreenLife Bakeware Healthy Ceramic Nonstick, 13" x 9" Rectangular Cake Baking Pan, PFAS-Free, Turquoise
-
OXO Good Grips 3- Piece Wooden Utensil Set
-
Amazon Basics Stainless Steel Wire Whisk Set - 3-Piece
-
Blue Diamond Cookware Diamond Infused Ceramic Nonstick, 14" Large Frying Pan with Helper Handle, PFAS-Free, Dishwasher Safe, Oven Safe, Blue
-
COOK WITH COLOR Plastic Mixing Bowls with Lids - 12 Piece Nesting Bowls Set includes 6 Prep Bowls and 6 Lids, Microwave Safe Mixing Bowl Set (Blue Ombre)
Nutrition Information:
Yield:
8Serving Size:
1Amount Per Serving: Calories: 453Total Fat: 25gSaturated Fat: 9gTrans Fat: 0gUnsaturated Fat: 14gCholesterol: 190mgSodium: 969mgCarbohydrates: 33gFiber: 1gSugar: 8gProtein: 24g
Frequently Asked Questions
Why Is My Breakfast Casserole Runny?
If your breakfast casserole turns out to be a bit runny, the culprit is likely too much liquid in the mix. To fix it, you should reduce the amount of liquid added to the ingredients, or else increase the amount of bread used. Another potential cause could be that some of your vegetables or mushrooms weren't cooked all the way through. As mushrooms and vegetables cook, they release water and this can make the breakfast casserole watery.
How Do I Thicken My Breakfast Casserole?
If your breakfast casserole is too thin, you can thicken it by adding a few tablespoons of cornstarch or flour to the mixture. For extra flavor, try stirring in some grated cheese as well. This will also help absorb any excess liquid and give the dish a creamy texture.
If you have pulled it from the oven and find it still watery, reduce the temperature to 300°F and cook for another 10 minutes. This usually is enough time to thicken up the egg and cook it through.
Do I Have to Let This Sit Overnight in the Refrigerator?
No, you don't have to let your bagel breakfast casserole sit overnight in the refrigerator. It is perfectly fine to assemble and bake the casserole right away if needed. However, letting it sit overnight will allow the flavors to fully develop and blend together for a more flavorful dish.
If cooking the same day, I do recommend adding 30 minutes of time to let the mixture soak before putting it into the oven.
What Else Can I Put In a Bagel Breakfast Casserole?
The beauty of this bagel breakfast casserole is that you can customize it to your liking. If you want to add some extra flavor and color, feel free to mix in chopped spinach, carrots, or zucchini. You can also try adding some diced potatoes or crumbled bacon for a little bit of texture. Finally, while this casserole has cheese in it already, you can add more cheese or add in additional types of cheese to give it even more flavor.
Chef's Tip
Day-old bagels or stale bagels are best for this recipe since they will soak up the egg mixture better to add more flavor and make it cook a bit more evenly. You may also want to switch up flavors by using a sesame bagel, an everything bagel, an onion bagel, or even a cheese/asiago bagel instead of plain.
Like tips like this? Then check out my latest cookbook, The Complete Cookbook for Beginners. This book is filled with essential skills and step-by-step techniques that are ideal for new home cooks.
More Easy Breakfast Casseroles
If you treat breakfast as the most important meal of the day like I do, then you'll love these other great recipes we have listed below. I love how hearty the bagel breakfast casserole is, but sometimes, you need a little something more. Below are some great ideas that are delicious, easy to make, and perfect for keeping you full until lunchtime. Take a moment to bookmark the recipes you like, print out the recipes, or pin them to Pinterest to make soon.
Leave a Reply