So, Christmas morning is on the horizon, and you’re dreaming of something ridiculously tasty, super comforting, but also, let’s be real, something that basically makes itself while you’re still in your PJs, right? Same, friend, *same*. Forget the frantic scramble; we’re talking about a breakfast casserole that lets you kick back, sip your coffee, and actually enjoy the holiday magic.
Why This Recipe is Awesome
Okay, let’s get down to brass tacks: why is this Christmas Morning Breakfast Casserole your new holiday MVP? First off, it’s a make-ahead marvel. Assemble it the night before, pop it in the fridge, and then just slide it into the oven when you finally manage to locate your first coffee of the day. Less stress, more festive cheer! It’s practically a Christmas miracle.
Secondly, it’s ridiculously forgiving. Seriously, it’s pretty much idiot-proof; even I haven’t managed to mess it up, and that’s saying something. Plus, it’s got all the good stuff: fluffy eggs, savory sausage (or bacon, if you’re feeling fancy), gooey cheese, and perfectly baked bread. It’s the kind of breakfast that tastes like a warm hug and makes everyone ask for seconds. **No culinary degrees required!**
Ingredients You’ll Need
Gather ’round, my kitchen warriors! Here’s what you’ll need for this masterpiece. Don’t worry, nothing too exotic here – just good old comfort food staples.
- 1 pound breakfast sausage (or bacon): Pick your poison! I’m a sausage person, but I won’t judge your bacon obsession.
- 6-8 slices bread: Day-old brioche, challah, or even just good ol’ white bread works wonders. Cut into 1-inch cubes.
- 1 ½ cups shredded cheese: Cheddar, Monterey Jack, Colby – the melty kind. The more, the merrier, obviously.
- 8 large eggs: The backbone of any good casserole.
- 2 cups milk: Whole milk gives the best richness, but whatever you have on hand is fine.
- 1 teaspoon dry mustard: A secret weapon for adding a subtle depth without making it taste like mustard. Don’t skip it!
- ½ teaspoon salt: Because seasoning is caring.
- ¼ teaspoon black pepper: A little kick never hurt anyone.
- Optional: Chopped bell peppers or onions: If you’re feeling adventurous and want some veggies.
- Butter or non-stick spray: For greasing your dish, because no one likes a sticky situation.
Step-by-Step Instructions
Alright, let’s get this show on the road! These steps are super simple, even for those of us who sometimes confuse a whisk with a spatula. (No judgment!)
- First things first, grab a large skillet. Cook your breakfast sausage over medium heat until it’s beautifully browned. Drain off any excess grease because nobody wants a greasy casserole. If you’re using bacon, cook it until crispy and crumble it up.
- Next, liberally grease a 9×13 inch baking dish. Don’t skimp here; we want easy cleanup!
- Toss those bread cubes into the bottom of your greased dish. Spread them out evenly.
- Sprinkle half of your cooked sausage (or bacon) and half of your shredded cheese over the bread. Layering is key, people!
- In a separate large bowl, whisk together the eggs, milk, dry mustard, salt, and pepper until everything is beautifully combined. If you’re adding bell peppers or onions, now’s the time to stir them into the egg mixture.
- Pour the egg mixture evenly over the bread, sausage, and cheese. Give it a gentle press to make sure all the bread gets a good soak.
- Now, sprinkle the remaining sausage and cheese on top. Cover your dish tightly with plastic wrap.
- **Pop it in the fridge for at least 4 hours, or even better, overnight.** This is the magic part where all the flavors get to know each other.
- When you’re ready to bake, pull the casserole out of the fridge about 30 minutes before baking to let it come closer to room temp. Preheat your oven to 350°F (175°C).
- Bake, uncovered, for 45-55 minutes, or until it’s golden brown and the center is set. A knife inserted near the center should come out clean.
- Let it cool for about 10 minutes before serving. This helps it set up perfectly. Slice, serve, and bask in the glory!
Common Mistakes to Avoid
We’ve all been there, staring at a kitchen disaster. Here are a few things to sidestep to ensure your casserole journey is smooth sailing:
- Forgetting to grease the dish: Rookie mistake! You’ll be scraping for days. Grease it generously.
- Not letting the bread soak: This is crucial. If your bread doesn’t absorb the egg mixture, you’ll end up with dry spots. **The overnight soak is non-negotiable!**
- Overcooking the sausage: You want it browned, not burnt to a crisp. Remember, it’ll cook more in the oven.
- Baking immediately: Rushing the chilling process means the flavors won’t meld properly. Patience is a virtue, especially for casseroles.
- Under-seasoning: Bland food is sad food. Don’t be shy with the salt and pepper! You can always add more, but you can’t take it away.
Alternatives & Substitutions
Feeling creative? This recipe is super flexible! Here are some ideas to make it uniquely yours:
- Meat: Instead of sausage, try diced ham, cooked ground beef, or even vegetarian “sausage” crumbles. Honestly, bacon is superior, **IMO**, but you do you.
- Cheese: Swiss, Gruyère, mozzarella, or a spicy pepper jack can all work. Mix and match!
- Bread: Ciabatta, sourdough, or even leftover dinner rolls can be used. Just make sure it’s a fairly sturdy bread.
- Veggies: Add sautéed mushrooms, spinach (squeeze out excess water!), or finely diced bell peppers and onions for extra flavor and nutrients.
- Dairy-Free: Swap out regular milk for an unsweetened plant-based milk (like almond or oat) and use your favorite dairy-free shredded cheese.
FAQ (Frequently Asked Questions)
Got questions? I’ve got answers! (Mostly.)
Can I use margarine instead of butter to grease the dish? Well, technically yes, but why hurt your soul like that? Butter just adds a little extra love, doesn’t it?
How long can I store the uncooked casserole in the fridge? You can assemble it up to 24 hours in advance. Perfect for Christmas Eve prep!
Can I freeze the casserole? Yes! You can freeze it unbaked or baked. If unbaked, thaw it in the fridge overnight before baking. If baked, thaw and reheat gently in the oven. **FYI**, it might be slightly less perfect, but still delicious.
My casserole is browning too quickly on top, but the middle isn’t set. Help! Easy fix! Just loosely tent it with aluminum foil for the remainder of the baking time. Crisis averted!
Can I add hot sauce to the egg mixture? Absolutely! If you like a little kick, a dash of your favorite hot sauce is a fantastic idea. Go wild!
What should I serve with this? Fresh fruit salad, a side of crispy bacon (if you didn’t put it in the casserole), or just more coffee. The casserole is the star, so don’t overthink it.
Final Thoughts
There you have it, folks! Your new go-to recipe for a stress-free, utterly delicious Christmas morning. This casserole is proof that you can have your cake (or, well, casserole) and eat it too, without spending half the morning slaving over a hot stove. It’s all about maximizing those precious holiday moments, isn’t it?
So go on, give it a whirl. Your taste buds (and your family) will thank you. Now go impress someone—or yourself—with your new culinary skills. You’ve earned it!

