As the sun starts to rise on Christmas morning, the aroma of a warm and comforting breakfast fills the air, inviting everyone to gather around the table. My Make-Ahead Christmas Breakfast Casserole is the perfect holiday centerpiece, layering savory sausage, fluffy eggs, crusty bread, and gooey melted cheese. What’s truly special about this dish is its make-ahead nature; prepped the night before, it lets you savor the festive moments with family instead of bustling in the kitchen. Not only is this casserole family-friendly, catering to everyone’s tastes with endless customization options, but it also sets the stage for a cozy gathering that’s full of love and laughter. Are you ready to create a delicious tradition that can be tweaked to your heart’s desire? Let’s dive in!

Why is this casserole a holiday must-have?
Warm, Inviting Aroma: As it bakes, the enticing scent of sausage and cheese creates a cozy atmosphere, making it a highlight of your Christmas morning.
Make-Ahead Magic: Prepare it the night before for a stress-free holiday breakfast, ensuring all you need to do is bake and enjoy!
Customization Galore: With variations for cheese, sausage, and veggies, it’s easy to cater to everyone’s tastes—whether you’re team cheddar or mozzarella!
Hearty & Satisfying: Packed with protein and hearty ingredients, this casserole provides the perfect fuel for holiday festivities.
Family-Friendly Favorite: Perfect for gatherings, it’s a dish that brings everyone together, ensuring smiles and full bellies all around.
Enhance your festive table with this dish, or check out how to make a Hobo Casserole Ground as a delightful dinner option later in the week!
Christmas Breakfast Casserole Ingredients
• To craft this delightful dish, gather your ingredients for a cozy Christmas morning!
For the Base
- Eggs – Provide structure and protein; feel free to use egg substitutes for a lighter version!
- Milk – Adds creaminess; any plant-based milk can make it dairy-free.
- Bread – Acts as the base, giving texture; swap for gluten-free bread if needed.
For the Filling
- Sausage – Contributes flavor and protein; turkey or chicken sausage works for a lighter option.
- Cheddar Cheese – Adds rich flavor and creaminess; try mozzarella or a cheese blend for variety.
- Onions & Peppers – Provide sweetness and texture; feel free to throw in spinach or mushrooms!
To Season
- Salt & Pepper – Essential seasonings to enhance flavor; adjust them to taste for your family’s preference.
Dive into this extraordinary Christmas Breakfast Casserole and enjoy a comforting dish loved by all!
Step‑by‑Step Instructions for Christmas Breakfast Casserole
Step 1: Cook the Sausage
In a large skillet over medium heat, add your preferred sausage. Cook, breaking it apart with a spatula, until browned and crumbly, about 5–7 minutes. The sausage should be fully cooked with a nice golden color. Once done, transfer it to a paper towel-lined plate to drain excess fat.
Step 2: Sauté the Vegetables
In the same skillet, add chopped onions and bell peppers. Sauté them over medium heat for about 4–5 minutes, or until they are soft and translucent. Stir occasionally to ensure even cooking and prevent burning. This step will develop their sweetness, enhancing the overall flavor of the Christmas Breakfast Casserole.
Step 3: Prepare the Baking Dish
Grease a large baking dish (approximately 9×13 inches) with butter or cooking spray. This will prevent sticking and make for easy serving! Then, layer the cubed bread evenly in the bottom of the dish, pressing gently to create a solid base for your casserole.
Step 4: Layer the Sausage and Vegetables
Spread the cooked sausage and sautéed vegetables evenly over the cubed bread. Make sure to distribute them well for balanced flavor in each slice of the Christmas Breakfast Casserole. The sausage adds heartiness, while the peppers and onions infuse it with freshness.
Step 5: Add Cheese
Sprinkle a generous layer of shredded cheddar cheese on top of the sausage and vegetables. Aim for an even distribution to ensure each bite of the casserole is cheesy and delicious. Feel free to mix in different types of cheese if you’d like to customize flavors!
Step 6: Whisk the Egg Mixture
In a mixing bowl, whisk together eggs, milk, salt, and pepper until well blended. This mixture will bind the casserole together and add richness. Pour the egg mixture evenly over the layered ingredients in the baking dish, ensuring all the bread is moistened for a perfect bake.
Step 7: Refrigerate Overnight (Optional)
If time allows, cover the baking dish with plastic wrap and refrigerate overnight. This will allow the flavors to meld beautifully and ensure the bread becomes fully saturated. If baking the same day, skip this step and proceed to the next!
Step 8: Preheat the Oven
On Christmas morning, preheat the oven to 350°F (175°C). This ensures the oven is hot and ready to bake when you’re set to pop in the casserole. The enticing aroma of the Christmas Breakfast Casserole will start the holiday off on a warm note!
Step 9: Bake the Casserole
Remove the cover from the baking dish and bake the casserole in the preheated oven for about 45 minutes. You’ll know it’s ready when the top is golden brown and the center is firm and puffed. This beautiful bake will fill your kitchen with inviting Christmas aromas!
Step 10: Let It Rest Before Serving
Once baked, remove the casserole from the oven and let it rest for about 5–10 minutes before slicing. This resting period allows it to set properly, making serving easier. The finished Christmas Breakfast Casserole will be a delightful centerpiece for your holiday table!

Expert Tips for Christmas Breakfast Casserole
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Resting Time: Allow the casserole to rest for 5–10 minutes after baking. This ensures it sets properly, making slicing easier and more neat.
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Brown the Sausage: Cook the sausage thoroughly until it’s nicely browned. This enhances the flavor and prevents it from being rubbery in the finished casserole.
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Don’t Overbake: Keep an eye on the casserole during baking. It should be puffed and firm in the center; overbaking can lead to a dry texture.
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Flavor Boost: For added zest, consider incorporating jalapeños or fresh herbs like thyme or rosemary into the mix. This gives your Christmas Breakfast Casserole an exciting twist!
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Vegetable Variations: Feel free to add additional vegetables like spinach or diced tomatoes for extra nutrition and flavor. This customization keeps everyone satisfied!
Christmas Breakfast Casserole Variations
Feel free to get creative and make this casserole truly your own, bursting with flavors that celebrate the season!
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Cheese Swap: Substitute cheddar for mozzarella for a creamier texture, perfect for cheese lovers!
The gooey melty goodness will take your casserole to a whole new level of indulgence. -
Sausage Option: Choose turkey or vegetarian sausage for a lighter take without sacrificing flavor.
Your family might just find they love this twist as much as the classic version! -
Veggie Boost: Add spinach, mushrooms, or diced tomatoes for extra nutrition and flavor.
These colorful additions not only enhance the taste but also make the casserole even more festive. -
Herb Infusion: Mix in herbs like rosemary or thyme for an aromatic brunch twist.
A sprinkle of these fresh herbs elevate the dish to a delightful culinary experience that your guests will rave about! -
Spicy Kick: Incorporate jalapeños or a pinch of cayenne for those desiring a little heat.
The subtle spice creates a wonderful contrast to the creamy cheese and savory sausage, making each bite exciting. -
Gluten-Free Alternative: Use gluten-free bread to make this casserole friendly for everyone at your table.
There’s no need to miss out on the cozy flavors—this swap ensures everyone feels included. -
Breakfast Style: Customize it with classic breakfast staples like crispy bacon or even diced bell peppers for added crunch.
Creating variations based on your favorite breakfast foods makes this casserole a win-win for all! -
Mini Casseroles: Divide the mixture into muffin tins for individual servings—perfect for holiday gatherings.
These bite-sized wonders are not only adorable but also allow guests to enjoy their favorite flavors on the go!
Love this cozy recipe? You might also want to try the comforting flavors of a Pot Pie Casserole or impress your guests with festive Christmas Tree Cake for dessert!
Make Ahead Options
These Christmas Breakfast Casserole preparations are a game-changer for busy holiday mornings! You can assemble the casserole up to 24 hours in advance, covering it tightly with plastic wrap and refrigerating it overnight to enhance the flavors. For best quality, ensure the bread is well-coated by the egg mixture to prevent dryness. If you’re planning further ahead, you can freeze the unbaked casserole for up to 3 days. When ready to serve, simply preheat your oven to 350°F (175°C) and bake from frozen for about 60 minutes or until golden and set. This way, you’ll enjoy a warm, comforting holiday breakfast with minimal effort, leaving you more time to create magical moments with family!
What to Serve with Christmas Breakfast Casserole
As the holiday magic unfolds, elevate your Christmas breakfast with delightful pairings that will warm hearts and fill bellies.
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Fresh Fruit Salad: A medley of juicy fruits adds a refreshing touch, balancing the richness of the casserole.
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Warm Buttermilk Biscuits: Fluffy biscuits slathered in butter create a comforting accompaniment to the savory casserole.
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Crispy Roasted Potatoes: Seasoned potatoes provide a satisfying crunch, enhancing the morning feast with hearty flavors.
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Creamy Coffee or Cocoa: Cozy beverages like rich coffee or creamy hot cocoa offer the perfect sips to complement your festive meal.
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Spiced Apple Cider: This warm, spiced drink brings warmth and sweetness, echoing the holiday spirit and making every sip special.
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Mini Cinnamon Rolls: Sweet and soft, these rolls are delightful little treats that serve as a sweet contrast to the savory casserole.
With these delicious pairings, your Christmas morning will be a memorable celebration of flavors and love!
How to Store and Freeze Christmas Breakfast Casserole
Fridge: Store the casserole in an airtight container for up to 3 days after cooking. Ensure it’s fully cooled before refrigerating to maintain freshness.
Freezer: The casserole can be frozen unbaked for up to 1 month. Cover it tightly with plastic wrap and then aluminum foil to prevent freezer burn.
Reheating: Bake leftover casserole at 350°F (175°C) for about 20–25 minutes if refrigerated, or increase to 30-35 minutes if frozen until heated through. Enjoy your delicious Christmas Breakfast Casserole anytime!

Christmas Breakfast Casserole Recipe FAQs
What type of bread is best for this casserole?
For the Christmas Breakfast Casserole, I recommend using a sturdy bread like French or sourdough, as they hold up well when soaked in the egg mixture. However, feel free to experiment with brioche for a sweeter base or even gluten-free bread if dietary needs require it.
How long can I store my leftover casserole in the fridge?
You can store your leftover Christmas Breakfast Casserole in an airtight container for up to 3 days. Be sure it’s fully cooled before sealing to maintain its deliciousness!
Can I freeze the Christmas Breakfast Casserole?
Absolutely! To freeze, prepare the casserole but do not bake it. Cover it tightly with plastic wrap and then aluminum foil to prevent freezer burn. It can be frozen for up to 1 month. When you’re ready to enjoy it, simply bake from frozen; it will take a little longer, about 30-35 minutes.
What if I want to make it vegetarian?
No problem! Simply substitute the sausage with your favorite plant-based sausage or omit it entirely. You can also add more vegetables, like mushrooms, spinach, or diced tomatoes, to enhance flavor and texture without losing heartiness.
Can I use different cheeses in this recipe?
Of course! While cheddar is a classic choice for the Christmas Breakfast Casserole, you can mix and match cheeses like mozzarella for extra creaminess or even a sharp Gruyère for depth of flavor. The more the merrier!
How do I know when the casserole is fully baked?
The casserole is ready when the top is a beautiful golden brown, and the center feels puffed and firm. If a toothpick inserted comes out clean, you’re good to go! Just let it rest for 5-10 minutes before serving to ensure the layers hold together well.

Cozy Christmas Breakfast Casserole for Holiday Mornings
Ingredients
Equipment
Method
- Cook the sausage in a large skillet over medium heat until browned and crumbly, about 5-7 minutes.
- Sauté chopped onions and bell peppers in the same skillet over medium heat for about 4-5 minutes.
- Grease a large baking dish with butter or cooking spray, then layer the cubed bread in the bottom.
- Spread the cooked sausage and sautéed vegetables evenly over the cubed bread.
- Sprinkle cheddar cheese on top of the sausage and vegetables.
- Whisk together eggs, milk, salt, and pepper in a mixing bowl, then pour evenly over the layers.
- If time allows, cover and refrigerate overnight to meld flavors; otherwise, skip this step.
- Preheat the oven to 350°F (175°C).
- Bake the casserole in the preheated oven for about 45 minutes until golden brown.
- Let it rest for 5-10 minutes before slicing and serving.

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