As I rummaged through my pantry one lazy Sunday morning, I stumbled upon a pile of buttery croissants that had grown stale—perfect for a new twist on breakfast! I whipped up a Sweet Croissant Breakfast Casserole that not only transforms leftover croissants into something heavenly but also makes for a delightful morning treat. This overnight breakfast casserole, studded with plump berries and drizzled with a zesty lemon glaze, offers an effortless way to impress family or guests without the morning stress. The best part? You can prepare it the night before, allowing all the flavors to mingle beautifully while you sleep. Curious to see how this sweet surprise comes together? Let’s dive in!

Why You’ll Love This Croissant Casserole
Simplicity at Its Best: This recipe is a breeze to make, requiring just a few simple steps that anyone can follow, even on the busiest mornings.
Elevated Flavors: The combination of buttery croissants, sweet berries, and zesty lemon glaze creates a breakfast experience that feels indulgent yet remains incredibly easy to prepare.
Make-Ahead Convenience: Prep it the night before, and wake up to a beautifully melded dish ready to bake—perfect for lazy Sundays or special occasions!
Crowd-Pleasing Delight: Whether it’s for brunch with friends or a family gathering, this casserole is sure to impress and satisfy. Guests will be coming back for seconds!
Versatile Customizations: Feel free to swap berries or add a different citrus twist, just like in our delightful Christmas Breakfast Casserole. It’s your canvas!
Make your mornings memorable with this Sweet Croissant Breakfast Casserole that has “delicious” written all over it!
Croissant Breakfast Casserole Ingredients
For the Casserole
- Croissants – Use bakery-style croissants (10 packed cups) for a buttery base; avoid tube varieties to ensure the best texture.
- Berries – Fresh favorites like raspberries, blueberries, or blackberries work beautifully; strawberries can also add a sweet touch.
- Eggs – Large, room temperature eggs provide the necessary structure for your custard.
- Half and Half – Essential for a rich custard; you can substitute with half heavy cream and half milk if needed, but avoid using milk alone to keep the density.
- Granulated Sugar – Enhances sweetness, allowing the lemon flavor to shine through in this Croissant Breakfast Casserole.
- Lemon Juice and Zest – Brightens and adds essential flavor depth; don’t skip it for a flat taste!
- Vanilla Extract – A splash of good quality vanilla adds wonderful aromatic notes to your dish.
For the Lemon Glaze
- Powdered Sugar – Provides sweetness and helps achieve the right consistency for drizzling.
- Lemon Juice – Essential for that delightful zing; adjust to taste for sweetness or tartness.
- Vanilla Extract – A touch here ties the glaze together, complementing the flavors in the casserole.
These simple ingredients combine to create a dish reminiscent of the best brunch treats, lifting your morning spirits effortlessly!
Step‑by‑Step Instructions for Sweet Croissant Breakfast Casserole
Step 1: Toast Croissants
Preheat your oven to 350°F (175°C). Cube the bakery-style croissants into bite-sized pieces and spread them evenly on a baking sheet. Toast them for 7-10 minutes, until they become golden brown and firm to the touch. This step enhances the texture and prevents sogginess, so let them cool while you prepare the custard.
Step 2: Prepare Custard
In a large mixing bowl, beat together the softened cream cheese and granulated sugar until the mixture is smooth and creamy. Next, add in the room temperature eggs, half and half, freshly squeezed lemon juice, lemon zest, vanilla extract, and a pinch of salt. Mix until everything is fully integrated, creating a luscious custard for your Sweet Croissant Breakfast Casserole.
Step 3: Assemble Casserole
Generously grease a 9×13 baking dish to prevent sticking. Layer half of the toasted croissant pieces on the bottom, followed by half of your chosen berries. Pour half of the creamy custard over these layers. Repeat the process with the remaining croissants, berries, and custard. Gently press down on the casserole to ensure the croissants soak up the custard well.
Step 4: Chill Overnight
Cover the assembled casserole tightly with plastic wrap or aluminum foil and place it in the refrigerator overnight. Allowing the Sweet Croissant Breakfast Casserole to chill will let the flavors meld together beautifully, and it will be ready for baking in the morning with no fuss!
Step 5: Bake
The next morning, preheat your oven to 350°F (175°C) once again. Remove the cover from the casserole and bake it in the preheated oven for 30 minutes. After that, uncover the dish and continue baking for an additional 15 minutes, or until the center is set and the top is a lovely golden brown.
Step 6: Prepare Lemon Glaze
While the casserole is baking, whip up the lemon glaze. In a small bowl, combine powdered sugar, a bit of lemon juice, and vanilla extract. Mix until you achieve a smooth, drizzling consistency. Adjust the sweetness and tartness as needed to your liking, creating a delightful finishing touch for your Sweet Croissant Breakfast Casserole.
Step 7: Serve
Once the casserole is baked and slightly cooled, drizzle the lemon glaze generously over the top. For an extra touch, serve with powdered sugar on the side. Enjoy this mesmerizing Sweet Croissant Breakfast Casserole warm, and watch your family and friends savor each delicious bite!

Expert Tips for Croissant Breakfast Casserole
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Use Stale Croissants: Ensure your croissants are a day or two old. Fresh croissants can lead to sogginess when combined with the custard in this Croissant Breakfast Casserole.
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Room Temperature Ingredients: Allow cream cheese, eggs, and half and half to reach room temperature. This promotes a smoother mixture and prevents clumps in your custard.
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Watch the Baking Time: Bake until the center is just set. Overbaking can dry out the casserole, making it less enjoyable. Use a toothpick to check for doneness.
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Customize Wisely: Feel free to switch out berries or citrus for a personal touch, but keep the custard-to-bread ratio balanced to maintain the casserole’s structure.
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Chill Overnight: Don’t skip the overnight chilling! This crucial step lets the flavors meld and ensures the croissants are perfectly soaked by morning.
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Adjust the Glaze: Taste your lemon glaze after mixing. Add more lemon juice or powdered sugar as needed to achieve your desired sweet and tart balance.
Make Ahead Options
These Sweet Croissant Breakfast Casserole preparations are perfect for busy home cooks looking to save time during hectic mornings! You can assemble the casserole up to 24 hours in advance by layering the toasted croissants, berries, and custard as instructed. Just cover tightly and refrigerate overnight, allowing the flavors to meld beautifully. To maintain quality, ensure the croissants are stale and well toasted to absorb the custard without becoming soggy. When you’re ready to enjoy this delicious breakfast, simply bake as directed: preheat your oven to 350°F and bake covered for 30 minutes, then uncover for an additional 15 minutes until golden. This way, you’ll wake up to a stress-free breakfast that’s just as delightful as when freshly prepared!
What to Serve with Sweet Croissant Breakfast Casserole
Brighten your brunch table with delicious pairings that elevate your morning feast.
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Fresh Fruit Salad: A refreshing mix of seasonal fruits complements the sweetness of the casserole, adding a burst of color and freshness.
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Crispy Bacon: The salty crunch of bacon provides a satisfying contrast to the sweet creamy casserole, making each bite perfectly balanced.
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Coffee Cake: Serve a slice of this delightful cake alongside for an indulgent experience that combines flavors and textures beautifully.
A warm beverage, like a latte or herbal tea, enhances the flavors while offering a cozy atmosphere.
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Mimosas: The sparkle of mimosas adds a celebratory touch, perfect for brunch gatherings with friends or family.
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Whipped Cream: A dollop of whipped cream on the side invites a touch of decadence, making every bite of your Sweet Croissant Breakfast Casserole feel like a special occasion.
Croissant Breakfast Casserole Variations
Feel free to make this recipe your own with these fun twists and swaps!
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Citrus Twist: Substitute lemon juice and zest with orange for a sweet and bright flavor change.
Transform your breakfast experience with a splash of sunshine. The aromatic orange brings a delightful sweetness! -
Berry Medley: Try a mix of seasonal fruits like peaches or nectarines, or go with one of your favorites, like strawberries!
Berries add a burst of color and flavor, creating a vibrant dish that’s a feast for the eyes and palate. -
Maple Infusion: Add a dash of maple syrup to both the custard and glaze for added sweetness.
This not-so-secret ingredient gives your casserole a warm, comforting sweetness, just like cozy mornings at home. -
Streusel Topping: Sprinkle a homemade streusel topping made of oats, flour, butter, and brown sugar before baking for a crunchy contrast.
The melted buttery topping brings a delightful crunch to each soft bite, elevating your breakfast experience! -
Dairy-Free Delight: Swap half-and-half for coconut milk and use dairy-free cream cheese for a lighter, vegan-friendly dish.
You’ll enjoy a cozy casserole that’s just as indulgent and creamy, with a hint of tropical flavor from the coconut. -
Nutty Crunch: Add chopped nuts, such as pecans or almonds, between the layers for extra texture and flavor.
Adding a nutty element creates a wonderful contrast with the tender croissants while enhancing the overall taste! -
Spicy Surprise: Mix in a pinch of cayenne pepper to the custard for a subtle heat kick.
This unexpected spice will awaken your senses and add an exciting twist to every mouthful! -
Syrup or Sauce: Drizzle some homemade berry sauce instead of glaze to enhance the taste and fruitiness.
This sauce can be made from simmering berries and sugar to create a luscious layer of sweetness that pairs beautifully!
Don’t forget to check out other delightful options like our Christmas Breakfast Casserole for inspiration on variations. The possibilities are endless, so get creative!
Storage Tips for Croissant Breakfast Casserole
Fridge: Cover tightly with plastic wrap and store in the refrigerator for up to 4 days. This keeps the casserole fresh and ready for quick reheating.
Freezer: For longer storage, wrap the assembled casserole tightly and freeze for up to 2 months. Thaw in the fridge overnight before baking.
Reheating: To reheat leftovers, warm in the oven covered with foil at 350°F (175°C) for about 20 minutes, or microwave individual portions for 1-2 minutes until heated through.
Leftover Tips: Enjoy cold or warm, perfect for those busy mornings! The sweet and tangy flavors of the Croissant Breakfast Casserole still shine through even after storage.

Croissant Breakfast Casserole Recipe FAQs
What type of croissants should I use?
Absolutely go for large, bakery-style croissants! They provide that rich, buttery base essential for this casserole. Avoid tube varieties, as they lack the necessary structure and flavor.
How long will leftovers last in the fridge?
You can store leftovers covered tightly in the fridge for up to 4 days. This makes it super convenient for a quick breakfast any time during the week!
Can I freeze the Croissant Breakfast Casserole?
Yes, you can absolutely freeze it! Wrap the assembled casserole tightly in plastic wrap or foil and freeze for up to 2 months. When you’re ready to enjoy it, thaw it in the fridge overnight before baking as directed.
What should I do if my casserole turns out too soggy?
If you find your Croissant Breakfast Casserole is soggy, it could be due to using fresh croissants or an improper custard-to-croissant ratio. To address this, ensure your croissants are slightly stale before assembly, or increase the croissant amount slightly. If you end up with a soggy casserole, consider reducing the custard next time or toasting the croissants a little longer before layering!
Can this recipe accommodate dietary restrictions?
Very! You can substitute dairy with non-dairy milk and cream alternatives to suit lactose intolerance or allergy needs. For gluten-free options, use gluten-free bread instead of croissants. Just keep the ratios in mind to maintain texture.
How can I adjust the sweetness of the lemon glaze?
To adjust your lemon glaze, start with the recommended amount of powdered sugar. Mix in lemon juice a little at a time until you reach your preferred sweetness or tartness. Taste as you go to get that perfect balance!
Enjoy your delightful cooking journey with this Croissant Breakfast Casserole!

Delicious Croissant Breakfast Casserole for Stress-Free Mornings
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C). Cube the croissants and toast them for 7-10 minutes until golden brown.
- In a large mixing bowl, beat together cream cheese and sugar until smooth. Add eggs, half and half, lemon juice, lemon zest, vanilla extract, and salt. Mix until fully integrated.
- Grease a 9x13 baking dish. Layer half of the toasted croissant pieces, followed by half of the berries and half of the custard. Repeat the layers.
- Cover the casserole with plastic wrap and refrigerate overnight.
- The next morning, preheat the oven to 350°F (175°C). Remove the cover and bake for 30 minutes, then uncover and bake for an additional 15 minutes.
- While baking, prepare the lemon glaze by mixing powdered sugar, lemon juice, and vanilla extract until smooth.
- Drizzle the lemon glaze over the baked casserole and serve warm.

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