There’s nothing better than waking up to the smell of this Irresistible Overnight Croissant Breakfast Bake. It’s buttery, cheesy, and full of savory sausage flavor. Perfect for holidays or lazy weekend brunches, it’s easy to prep the night before and bake fresh in the morning.
Table of Contents
Why This Irresistible Overnight Croissant Bake Works
This Irresistible Overnight Croissant casserole combines rich, buttery croissants with a creamy egg custard that soaks overnight, creating an unbelievably soft yet crisp-topped texture. The layers of sausage and cheese make every bite comforting and hearty. You can prepare everything in just 15 minutes, refrigerate it, and bake when ready. It’s ideal for busy mornings, potlucks, or family brunches. Also, day-old croissants soak up the custard better, giving the dish a perfect balance of crunch and creaminess.
What You’ll Need for the Best Overnight Croissant Casserole
Simple, wholesome ingredients make this recipe shine. You’ll only need pantry staples and a few fresh items to create an indulgent breakfast casserole that feels special yet effortless.
Key Ingredients and Exact Measurements
Use 5 large croissants, preferably a day old, torn into chunks for best texture. Add 1 pound (450g) cooked ground sausage for a savory kick. Mix 1 cup (120g) of shredded cheddar cheese for creaminess, and whisk 6 large eggs with 2 cups (475ml) of milk for the custard base. Season with 1 teaspoon salt, ½ teaspoon each of pepper, garlic powder, and onion powder. Sprinkle with parsley if you’d like a fresh finish.
Recommended Kitchen Tools for Easy Prep
You’ll need a 9×13-inch baking dish, a large mixing bowl, a whisk, and foil for covering the dish overnight. A spatula helps spread the layers evenly.
How to Make an Irresistible Overnight Croissant Breakfast Bake (Step-by-Step)
This Irresistible Overnight Croissant recipe is easy to prepare ahead, so your morning stays relaxed.
Prepare the Base Layer
Grease a 9×13-inch baking dish. Tear croissants into chunks and spread evenly in the dish. This layer will soak up all the savory custard later, creating the perfect buttery base.
Mix the Custard and Assemble
In a bowl, whisk eggs, milk, salt, pepper, garlic, and onion powder until smooth. Pour over the croissants. Add cooked sausage and sprinkle shredded cheese evenly on top. Press down gently so the croissants absorb the liquid.
Chill Overnight for Perfect Texture
Cover with foil and refrigerate for at least 6 hours or overnight. This step lets the flavors meld and gives the croissants time to absorb the creamy egg mixture.
Bake, Rest, and Serve
Preheat the oven to 350°F (175°C). Bake uncovered for 40–45 minutes until golden and firm. Let it rest for 10 minutes before slicing. Garnish with fresh parsley and serve warm.
Flavor, Texture, and Serving Notes
Expect a buttery, flaky texture with crispy edges and a creamy center. The sausage adds richness, while the cheese melts into every bite. The top turns lightly crisp, creating the perfect contrast. Serve it with fruit, coffee, or a light salad for balance. It’s satisfying enough for brunch yet comforting like a cozy breakfast at home.
Expert Tips for a Perfect Overnight Croissant Casserole Every Time
Always use day-old croissants. Fresh ones can turn soggy. Press the mixture gently before chilling to help absorption. For an extra golden crust, broil the top for 2–3 minutes at the end. Let it cool slightly before cutting to keep slices neat. You can prepare and freeze the dish before baking for future meals. Add a touch of hot sauce or diced peppers if you like spice.
Easy Variations, Swaps, and Add-Ins
Protein Substitutions
Swap sausage with turkey, chicken, or plant-based meat for a lighter version.
Cheese and Seasoning Upgrades
Try Swiss or Monterey Jack instead of cheddar for a milder flavor. Add smoked paprika or chili flakes for an extra punch.
Veggie and Spice Additions
Sautéed onions, spinach, or mushrooms add more depth. A handful of sun-dried tomatoes or roasted peppers can add brightness.
Make-Ahead, Storage, Freezing, and Reheating Guide
This casserole can be made 1–2 days ahead. Keep it covered in the fridge. Store leftovers in an airtight container for up to 4 days. To freeze, wrap tightly and freeze for up to 2 months. Thaw in the fridge overnight, then reheat at 325°F (160°C) for 20 minutes or microwave individual portions for 1–2 minutes.
Serving Ideas to Complete Your Breakfast or Brunch Spread
Pair this dish with fresh fruit, crispy bacon, or a side of yogurt parfaits. It also goes perfectly with a cup of coffee or a light mimosa. Try serving it with Creme Brûlée French Toast with Caramelized Sugar Crunch or Blueberry French Toast Casserole for Easy Brunch for a complete breakfast spread.
Troubleshooting and Common Mistakes to Avoid
If the casserole is soggy, you likely used fresh croissants. If it’s too dry, add a bit more milk next time. Uneven browning can mean your oven temperature runs hot—cover with foil midway through baking. Always rest before slicing, or it may fall apart.
Frequently Asked Questions About Overnight Croissant Casseroles
What is the best croissant in the world?
The best croissants are often found in French bakeries, known for their buttery layers and crisp edges.
Is “croissant” feminine or masculine?
In French, “croissant” is masculine — le croissant.
Why don’t croissants have a crescent shape anymore?
Some bakers shape them straight to make them easier to roll and fill.
How do you eat a croissant?
Enjoy it warm, torn apart by hand, or with jam, butter, or in recipes like this casserole.
Other Recipes You May Enjoy
- Protein Pancakes for a Nourishing Morning Start
- Crustless Quiche Packed with High-Protein Goodness
- Fluffy Japanese Soufflé Pancakes
- Tater Tot Sausage Breakfast Casserole
Conclusion
This Irresistible Overnight Croissant Breakfast Bake is the easiest way to serve something warm, cheesy, and satisfying for brunch. With simple prep and rich flavor, it’s sure to impress everyone at the table. For more make-ahead breakfast ideas, check out Ellie’s brunch inspiration on Pinterest.
Irresistible Overnight Croissant Breakfast Bake
Equipment
- 9×13-inch baking dish Use glass or ceramic for even baking.
- Mixing bowl Large enough for whisking custard ingredients.
- Whisk Ensures smooth, well-blended custard.
- Aluminum foil For covering the casserole overnight.
Ingredients
- 5 large croissants, torn into chunks (preferably day-old)
- 1 lb ground sausage, cooked and drained
- 1 cup shredded cheddar cheese
- 6 large eggs
- 2 cups whole milk
- 1 teaspoon salt
- ½ teaspoon black pepper
- ½ teaspoon garlic powder
- ½ teaspoon onion powder
- fresh parsley, chopped (optional for garnish)
Instructions
- Grease a 9×13-inch baking dish and spread the croissant pieces evenly in the bottom.
- Layer cooked sausage and shredded cheese evenly over the croissants.
- In a mixing bowl, whisk together eggs, milk, salt, pepper, garlic powder, and onion powder until smooth. Pour over the croissant mixture, pressing down gently so the bread absorbs the liquid.
- Cover the dish with foil and refrigerate for at least 6 hours or overnight to allow the croissants to absorb the custard.
- Preheat the oven to 350°F (175°C). Bake uncovered for 40–45 minutes or until golden and set. Let rest 10 minutes before slicing. Garnish with parsley and serve warm.
