This overnight breakfast casserole with bread is the perfect thing to make if you're hosting. It has sausage and bread cubes mixed in a creamy, cheesy sauce with fluffy eggs. This recipe is quick and easy to prepare the night before, and it's a hearty breakfast everyone will love!
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The Best Make Ahead Breakfast Casserole
This overnight breakfast casserole with bread recipe takes typical breakfast casseroles to another level. It's filling, flavorful, and packed with so many delicious breakfast ingredients.
The casserole has a blend of pork sausage, tender bread, and perfectly fluffy eggs with a decadent cheesy filling. It's the best combination of sausage, egg, and cheese. Even better than my super popular sausage cream cheese casserole!
Why You'll Love This Recipe
Minimal prep time. You just have to cook the sausage, combine all of your ingredients in a bowl, and put everything in a baking dish. It'll take you 15 minutes at most to prepare this casserole.
It's so convenient. This make ahead breakfast casserole recipe gets prepped in the evening. Then in the morning, all you have to do is bake it in the oven. It's the perfect breakfast recipe for hosting, especially if you're serving it on Christmas morning or for Easter brunch!
Everyone loves it. The main reason I always make this if I'm hosting or need to bring something for the holidays is it's a hit with everyone. Both kids and adults say this is their favorite thing on the breakfast table every year!
- Pork sausage- I used Jimmy Dean pork breakfast sausage.
- Eggs- six large ones.
- Milk- I prefer whole milk, but anything you have on hand will work great.
- Salt- for flavor.
- Mustard- it may seem odd, but this is my secret ingredient that makes the casserole taste so good.
- Bread- I use white bread cut into cubes.
- Cheese- I used white shredded cheddar cheese. Any cheese works great.
Oh, and you can use most of these ingredients to make this Christmas breakfast casserole. It's another version of a breakfast casserole with bread that's just as delicious!
How To Make Overnight Breakfast Casserole
1. Cook the sausage: In a large skillet, cook the sausage with a little olive oil. Use a wooden spoon to break up the sausage and cook until it's browned on all sides. Then, remove the sausage from the skillet and set it aside.
2. Make the egg mixture: In a large bowl, whisk together the eggs, salt, milk, and mustard until everything combines.
3. Build the casserole: Add the bread cubes to the bowl and mix in with the egg mixture. Then add the cooked sausage and shredded cheddar cheese and stir everything together until it's well combined.
4. Assemble the casserole: Spray a 9x13-inch baking dish with nonstick cooking spray. Pour the sausage and egg mixture into the prepared dish, cover it with a lid or tightly with plastic wrap, and let it chill in the fridge overnight or for at least 8 hours.
5. Bake the casserole: When you're ready to serve, preheat the oven to 350°F (175°C) and take the casserole out of the fridge so it can come to room temperature. Then, you can put the casserole in the oven and bake it uncovered for 30-40 minutes. Serve warm and enjoy!
Tips To Make The Best Recipe
- Break the sausage apart continuously as it cooks, so it makes small crumbles.
- For the best results, make sure you let the casserole reach room temperature before baking.
- Sprinkle some of the remaining cheese over top of the casserole right before baking for an extra cheesy breakfast casserole.
- You want to bake the casserole uncovered so the filling cooks through and the cheese gets bubbly and golden.
- You'll know the casserole is finished cooking when the bread cubes are golden, the cheese is completely melted, and the egg is set.
- Experiment with adding ingredients like sliced mushrooms, diced bell peppers, diced onion, spinach, broccoli, or bacon for even more flavor.
Storing and Reheating Instructions
In the fridge: Put a lid on the baked casserole or transfer it to an airtight container and store the leftover casserole in the fridge for about 3-4 days.
In the freezer: Allow the casserole to cool completely, then transfer it to an airtight container or freezer-safe bag and freeze for up to 3 months.
Reheating: The best way to reheat the leftovers is in the oven. Transfer them back to a casserole dish and warm in the oven at 350°F for 10 minutes or until warmed through. You can also reheat it in the microwave in 30-second increments until warm, but the bread will get a bit soggy.
Frequently Asked Questions
Do I cover breakfast casserole when baking?
You do not have to cover the breakfast casserole when baking. You'll only want to cover it if you notice the top of the top is browning too quickly while baking.
Can you make a casserole with raw egg and leave it uncooked in the fridge overnight?
Yes! Making an overnight breakfast casserole is super convenient when you know you'll have a busy morning or need to bring a dish over to someone's house and want to bake it fresh.
How long can uncooked breakfast casserole stay in the fridge?
An uncooked breakfast casserole will stay good in the fridge for up to 3 days. You'll want to cover it tightly with plastic wrap or keep it in a casserole dish with a lid.
More Breakfast Casserole Recipes
- Crescent roll breakfast casserole
- Pancake casserole
- Breakfast casserole with bacon
- Bisquick breakfast casserole
- Tater tot breakfast casserole
- Brioche French toast casserole
- 1 pound pork sausage
- 6 eggs
- 2 cups milk
- 1 tsp. salt
- 1 tbsp. mustard
- 6 slices white bread, cubed
- 2 cups cheddar cheese, shredded
- In a heavy skillet, cook the sausage with a little olive oil, breaking up the sausage with a spoon until cooked and browned. Remove the sausage from the pan and set aside.
- In a large mixing bowl, whisk together the eggs, salt, milk, and mustard until combined.
- Add the cubed bread and mix it with the egg mixture.
- Add the cooked sausage and shredded cheese and stir everything together until well combined.
- Spray a 9x13 inch baking dish (or something similar in size) with non-stick cooking spray. Pour mixture into prepared dish, cover it, and refrigerate for at least 8 hours or overnight.
- Let the casserole come to room temperature before baking. Preheat the oven to 350°F. Bake for 30-40 minutes uncovered until eggs are set and bread is golden.
- Remove from the oven when done, and serve warm.
Serving Size:1 serving
Amount Per Serving: Calories: 585Total Fat: 40gSaturated Fat: 0gTrans Fat: 0gUnsaturated Fat: 0gCholesterol: 0mgSodium: 0mgCarbohydrates: 19gFiber: 0gSugar: 0gProtein: 35g