Loaded Overnight Breakfast Casserole
Loaded Overnight Breakfast Casserole is a perfect start to any morning, especially when you want something hearty and ready to go. It’s packed with fluffy eggs, melted cheese, crispy bacon,…
By Ava
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Reading time: 6 min
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Loaded Overnight Breakfast Casserole is a perfect start to any morning, especially when you want something hearty and ready to go. It’s packed with fluffy eggs, melted cheese, crispy bacon, and tender bread all soaking up delicious flavors overnight. This dish brings together all those breakfast favorites into one warm, comforting bake.
I love making this casserole the night before because it saves me time in the morning while still feeling like a special treat. It’s a favorite at family gatherings and busy weekends since you just pop it in the oven and let it work its magic. Plus, you can easily customize it with your favorite veggies or switch up the meat to keep things interesting.
My favorite way to serve it is with a simple side of fresh fruit or a light salad to balance out the richness. It’s always a hit and leaves everyone asking for the recipe. I’ve found that letting it sit overnight helps all the flavors blend together, making every bite more tasty. It’s definitely one of those dishes that feels like a warm morning hug!
Key Ingredients & Substitutions
Bread: Using sturdy bread like French or sourdough helps the casserole keep its shape. Day-old bread works best because it soaks up the egg mixture without getting mushy. If you want a gluten-free version, try gluten-free bread cubes.
Eggs & Dairy: Eggs provide the rich custard base. Whole milk and heavy cream make it extra creamy. For a lighter version, you can swap heavy cream with more milk or use a dairy-free milk like oat milk.
Meats: Breakfast sausage and bacon add great flavor and texture. You can swap sausage for cooked ham or turkey bacon to cut fat, or use plant-based alternatives for a vegetarian option.
Cheese: Cheddar gives a nice sharp flavor and melts well. If you prefer, try Monterey Jack, mozzarella, or a blend of cheeses. For dairy-free, use a vegan cheese substitute.
Herbs & Garnish: Green onions or chives bring freshness and a mild onion taste. Fresh herbs brighten the dish. If you like a little spice, add thin slices of chili pepper or a pinch of cayenne.
How Do You Get the Best Texture in an Overnight Breakfast Casserole?
The key to a perfect casserole is how you handle soaking and baking.
- Soaking: Make sure to layer the cubed bread and evenly pour the egg mixture over it. Gently press down so the bread soaks well but doesn’t get soggy.
- Refrigerating overnight: This resting time lets the eggs really soak into the bread, creating a custardy texture when baked.
- Baking: Bake uncovered so the top gets golden and slightly crisp. Check around 45 minutes — the casserole is ready when the eggs are set but not rubbery. If cracking raw eggs on top, bake until they reach your desired doneness.
My personal tip: use a mix of day-old bread and slightly fresher bread to get a nice crunch on top while keeping the inside soft and creamy. This balance is what makes this casserole so inviting!
Equipment You’ll Need
- 9×13-inch baking dish – perfect size to hold all the layers and bake evenly.
- Large mixing bowl – for whisking eggs and combining ingredients with room to spare.
- Whisk – helps keep the egg mixture smooth and well blended.
- Nonstick skillet – great for cooking sausage and bacon without sticking.
- Measuring cups and spoons – for accurate measurement of milk, cream, and seasonings.
Flavor Variations & Add-Ins
- Swap sausage for diced ham or cooked chorizo for a different meat flavor that still pairs well with eggs and cheese.
- Use pepper jack cheese instead of cheddar for a little spicy kick.
- Add sautéed bell peppers and onions for extra sweetness and texture.
- Mix in fresh spinach or kale for a boost of green veggies and nutrients.
Loaded Overnight Breakfast Casserole
Ingredients You’ll Need:
For The Base:
- 8 slices of bread, cut into cubes (preferably a sturdy bread like French or sourdough)
Egg Mixture:
- 8 large eggs
- 2 cups whole milk
- 1/2 cup heavy cream
- 1 teaspoon salt
- 1/2 teaspoon black pepper
Meats and Cheese:
- 1 pound breakfast sausage, cooked and crumbled
- 8 slices bacon, cooked and chopped
- 1 1/2 cups shredded cheddar cheese
Herbs and Garnish:
- 1/2 cup chopped green onions or chives
- Optional: 1 small red chili pepper, sliced thinly (for garnish)
How Much Time Will You Need?
You’ll spend about 20 minutes preparing this casserole the night before. Then, let it chill in the fridge overnight so the bread soaks in the egg mixture nicely. The next morning, bake it for about 45 to 60 minutes until golden and set. All in all, this makes for a super simple and satisfying breakfast that does most of the work while you sleep!
Step-by-Step Instructions:
1. Prepare Meat and Bread:
Preheat your oven to 350°F (175°C). Cook the breakfast sausage in a skillet over medium heat until browned and cooked through, then drain the excess fat. Cook the bacon until crispy; drain and chop it into bite-sized pieces. Cube the bread and spread it evenly in a greased 9×13-inch baking dish.
2. Layer Sausage and Bacon:
Sprinkle the cooked sausage and half of the chopped bacon evenly over the bread cubes.
3. Mix the Egg Base:
In a large bowl, whisk together the eggs, milk, heavy cream, salt, and black pepper until well combined.
4. Assemble the Casserole:
Pour the egg mixture evenly over the layered bread and meats. Gently press down so the bread soaks in the egg mixture well.
5. Add Cheese and Remaining Bacon:
Sprinkle the shredded cheddar cheese on top, followed by the remaining bacon pieces.
6. Refrigerate Overnight:
Cover the casserole tightly with plastic wrap or foil and place it in the refrigerator overnight. This resting time lets the flavors blend and the bread soak up the egg mixture fully.
7. Bake and Finish:
Next morning, remove the casserole from the fridge. For an extra special touch, you can crack 3-4 whole eggs spaced on top (optional). Bake uncovered for 45 to 60 minutes, until the casserole is golden on top and the eggs are fully set.
8. Garnish and Serve:
Let the casserole cool for 5 to 10 minutes. Garnish with chopped green onions or chives and slices of red chili pepper if you like a little extra color and heat. Serve warm with fresh fruit or a light salad for a perfect breakfast.
Can I Use Frozen Bread for This Casserole?
Yes, you can use frozen bread, but it’s best to thaw it completely before cubing. This helps the bread soak up the egg mixture evenly without becoming too soggy.
Can I Prepare This Casserole the Morning Of Instead of Overnight?
Absolutely! If you’re short on time, assemble the casserole and let it sit at room temperature for 30 minutes before baking. However, soaking it overnight gives the best texture and flavor.
How Should I Store Leftovers?
Store leftovers in an airtight container in the fridge for up to 3 days. Reheat gently in the oven or microwave until warmed through for the best taste and texture.
Can I Make This Casserole Vegetarian?
Yes! Skip the sausage and bacon, and add extra veggies like mushrooms, bell peppers, or spinach. Use plant-based sausage or bacon alternatives if you like, and don’t forget the cheese for flavor.