If you’re anything like me, breakfast has to check three boxes: quick, comforting, and loved by everyone at the table.

If there’s one breakfast I always make when I want everyone happy, full, and asking for seconds, it’s this Bacon Croissant Breakfast Casserole. It’s buttery, cheesy, comforting, and honestly feels a little fancy without any extra work which is exactly what we want on Christmas morning.

This is the kind of recipe you throw together while the house still smells like coffee and cinnamon, gifts are waiting to be opened, and no one wants to stand over the stove flipping pancakes. You assemble it, pop it in the oven, and let it do its thing while you enjoy the moment.

Flaky croissants, crispy bacon, melty cheese, and a creamy egg custard come together into one cozy, crowd-pleasing bake that feels festive and familiar all at once.

Why You’ll Love This Croissant Breakfast Casserole

Let me tell you why this recipe works especially for the holidays:

Easy but impressive – It looks fancy, tastes indulgent, but takes minimal effort
Family-friendly – No onions, no overpowering flavors, just comfort food everyone loves
Perfect for Christmas morning – Hands-off baking = more time with your people
Small-batch friendly – Ideal for feeding 3–4 without leftovers going to waste
Make-ahead option – Assemble the night before and bake fresh in the morning

This is one of those recipes that disappears fast and gets requested again the next holiday.

Ingredients You’ll Need

You don’t need anything complicated here — just good basics:

Croissants (day-old works best)
Crispy cooked bacon
Cheddar cheese
Mozzarella cheese
Eggs
Heavy cream
Dijon mustard
Garlic powder (optional but recommended)
Salt, pepper, and a pinch of nutmeg

That’s it. Simple ingredients, big payoff.

How to Make Bacon Croissant Breakfast Casserole

Here’s the easy breakdown:

Tear the croissants into large pieces and layer them into a greased casserole dish.
Sprinkle the crispy bacon over the croissants, followed by most of the cheese.
Whisk together eggs, cream, Dijon, and seasonings until smooth.
Pour the egg mixture evenly over everything and gently press the croissants down so they soak it up.
Top with the remaining cheese and bake until golden, puffed, and set in the center.

The result? A soft, custardy inside with golden edges and melty cheese on top — exactly how a breakfast casserole should be.

Pro Tips for the Best Results

These small tips make a big difference:

Use slightly stale croissants – They absorb the custard better without turning mushy
Cook bacon until crispy – This keeps it from getting chewy once baked
Cover, then uncover – Foil first to cook through, then remove for that golden top
Let it rest – A 5-minute rest helps everything set perfectly

If you want to prep ahead, you can assemble the casserole the night before, cover it tightly, refrigerate, and bake in the morning.

Perfect for the Holidays (and Beyond)

While this casserole shines on Christmas morning, it’s also perfect for:

Holiday brunches
Weekend family breakfasts
Hosting overnight guests
Anytime you want comfort food without stress

It’s cozy, reliable, and always a hit — which is exactly what we want from a breakfast recipe.

Final Thoughts

This Bacon Croissant Breakfast Casserole checks every box: easy, comforting, festive, and family-approved. It’s the kind of recipe that becomes a tradition — the one everyone secretly hopes you’ll make again next year.

If you try it, let me know how it turns out. And if you need the printable recipe card, I’ve got you covered.