Overnight Mixed Berry Croissant Breakfast Casserole
This Post May Contain Affiliate Links. Please Read Our Disclosure PolicyThis Overnight Mixed Berry Croissant Breakfast Casserole is a simple make-ahead breakfast that’s perfect for brunch, holidays, or overnight guests. Made with buttery croissants, a creamy filling, and fresh mixed berries, it bakes into a soft, custard-style casserole that’s always a crowd-pleaser.
I’ve always thought it was a good idea to have a few go-to breakfast and brunch recipes ready, especially when you have overnight guests. If you want something that feels a little special without making your morning stressful, that’s exactly where this Overnight Mixed Berry Croissant Breakfast Casserole comes in. It’s simple to prep, easy to bake, and perfect for holidays, weekend gatherings, or anytime you’re feeding a group.
If you’ve made a French toast-style casserole before, this one will feel familiar but with a fun twist. Instead of bread, you’re using buttery croissants, which adds so much flavor and gives it a softer, richer texture. Each croissant is filled with a sweet berry and cream cheese mixture, so every bite has a little surprise tucked inside. It’s one of those details that makes people pause and say, “Wait, this is so good.”
Another thing I love about this recipe is how easy it makes your morning. Everything comes together the night before, so when you wake up, all you have to do is pop it in the oven. It’s the kind of recipe that lets you enjoy your coffee and your company instead of rushing around the kitchen.
I used to run a bed and breakfast, so I’ve made my fair share of morning meals for a crowd. Recipes like this were always my favorite because they’re reliable, low-stress, and still feel thoughtful. If you’re looking for something easy yet a little elevated, this is a great one to have in your back pocket.
Why You’ll Enjoy This Recipe
- Croissants make it feel extra special. Using croissants instead of bread gives this casserole a rich, buttery flavor and a soft, layered texture that feels a little more elevated than the usual breakfast bake.
- The berry and cream cheese filling is a fun surprise. Each croissant is filled with a sweet, creamy berry mixture that melts right into the layers as it bakes. It’s not something you expect at first glance, which makes it even more memorable when you take that first bite.
- Even though it comes together with simple ingredients and straightforward steps, the final result feels like something you spent a lot more time on. It’s perfect for holidays, brunch gatherings, or anytime you want to serve something a little different without making things complicated.
Looking for more brunch recipes? I have plenty! Check out this collection of my best brunch recipes for easy entertaining.
Ingredients
Before I can walk you through this overnight casserole recipe, we’ll need to gather all the necessary ingredients.
- Powdered Sugar – Adds sweetness to the cream cheese filling and gives it that smooth, lightly sweet finish.
- Cream Cheese – The base of the filling, creating a rich, creamy texture that pairs perfectly with the berries.
- Lemon Zest – Brings a bright, fresh flavor that helps balance the richness of the cream cheese.
- Fresh Lemon Juice – Adds a touch of acidity to keep the filling from feeling too heavy and enhances the berry flavor.
- Vanilla Extract – Rounds everything out with a warm, subtle sweetness that ties all the flavors together.
- Mixed Berries – A combination of berries adds color, freshness, and a sweet-tart flavor throughout the casserole.
- Granulated Sugar – Sweetens the custard and helps create that classic breakfast bake flavor.
- Half-and-Half – Gives the custard a rich, creamy consistency without being too heavy.
- Eggs – Help bind everything together and create that soft, custard-like texture as it bakes.
- Kosher Salt – Just a small amount enhances all the flavors and balances the sweetness.
- Mini Croissants – Buttery and flaky, these take the place of bread and make this casserole feel extra special.
- Sliced Almonds – Add a light crunch and a toasty flavor that contrasts nicely with the soft casserole.
- Maple Syrup – Perfect for serving, adding a little extra sweetness and that classic breakfast touch.
How To Make
And with all of the ingredients assembled, I think we’re ready to make this Overnight Mixed Berry Croissant Breakfast Casserole. I’ll walk you through the steps below. I’ve also provided a full ingredient list and instructions in the printable recipe card below.
- In a large mixing bowl, combine the powdered sugar with 8 ounces of the cream cheese. Add the lemon zest, ½ tablespoon lemon juice, and 1 teaspoon vanilla. Mix until smooth and creamy. Gently fold in about half of the berries, pressing some of them slightly so they release a bit of their juices. Set this mixture aside.
- In another bowl, blend the remaining cream cheese with the granulated sugar until smooth. Slowly whisk in the half-and-half, followed by the eggs, salt, the rest of the lemon juice, and the remaining vanilla. Whisk until the mixture is fully combined and silky.
- Slice the croissants in half horizontally and arrange the bottom halves in a greased 9×13-inch baking dish. (You may have a couple extra.) Spoon the berry cream cheese mixture over each base, then place the tops back on to create little sandwiches.
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- Pour the custard mixture evenly over the croissants, making sure everything gets a good soak. Tear the remaining croissants into pieces and tuck them into any open spaces in the dish. Scatter the remaining berries over the top.
- Cover the dish and refrigerate for at least eight hours or overnight so the croissants can absorb all that flavor.
- When you’re ready to bake, take the dish out of the refrigerator and let it sit while the oven heats to 325 degrees F. Cover with foil and bake for about 30 minutes. Remove the foil and continue baking for another 25 to 30 minutes, until the top is lightly golden and the center is set.
- Finish with a sprinkle of toasted almonds and a light dusting of powdered sugar. Serve warm with maple syrup on the side.
Frequently Asked Questions
Do I have to let this sit overnight, or can I bake it sooner?
Overnight is best because it gives the croissants time to fully absorb the custard, which creates that soft, cohesive texture. If you’re short on time, you can let it sit for at least two to three hours in the refrigerator, but the final result may be slightly less rich and custardy.
How do I know when the casserole is fully baked?
The center should look set and not overly jiggly, and the top should be lightly golden. If you insert a knife into the middle, it should come out mostly clean without liquid custard. If it still seems too soft in the center, give it a few more minutes in the oven.
How should I store leftovers and reheat them?
Store any leftovers covered in the refrigerator for up to three days. To reheat, you can warm individual portions in the microwave or place the dish back in the oven at a low temperature until heated through. If reheating in the oven, covering it loosely with foil helps keep it from drying out.
More Breakfast Casserole Recipes You’ll Love
- Chocolate Chip Pancake Casserole
- Everything Bagel Overnight Casserole
- Pumpkin French Toast Casserole
- Easy Overnight Egg Casserole
- Apple Cinnamon French Toast Casserole
And that’s a wrap on this Overnight Mixed Berry Croissant Breakfast Casserole. I hope this becomes one of those recipes you reach for again and again, the kind you make when you want something easy, reliable, and just a little bit special. If you enjoy this recipe, I’d love to know what you think. Please stop back and leave a comment and a 5-star rating below.
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Overnight Mixed Berry Croissant Breakfast Casserole
Ingredients
- 1 cup powdered sugar plus more for garnish
- 16 ounces softened cream cheese divided
- 2 teaspoons grated lemon zest plus 1½ tablespoons fresh lemon juice, divided
- 1 tablespoon plus 1 teaspoon vanilla extract divided
- 2 cups mixed berries divided
- ⅔ cup granulated sugar
- 2 cups half-and-half
- 4 large eggs lightly beaten
- ½ teaspoon kosher salt
- 14 mini croissants*
- Toasted sliced almonds for topping
- Maple syrup for serving
Instructions
- In a large mixing bowl, combine the powdered sugar with 8 ounces of the cream cheese. Add the lemon zest, ½ tablespoon lemon juice, and 1 teaspoon vanilla. Mix until smooth and creamy. Gently fold in about half of the berries, pressing some of them slightly so they release a bit of their juices. Set this mixture aside.
- In another bowl, blend the remaining cream cheese with the granulated sugar until smooth. Slowly whisk in the half-and-half, followed by the eggs, salt, the rest of the lemon juice, and the remaining vanilla. Whisk until the mixture is fully combined and silky.
- Slice the croissants in half horizontally and arrange the bottom halves in a greased 9×13-inch baking dish. (You may have a couple extra.) Spoon the berry cream cheese mixture over each base, then place the tops back on to create little sandwiches.
- Pour the custard mixture evenly over the croissants, making sure everything gets a good soak. Tear the remaining croissants into pieces and tuck them into any open spaces in the dish. Scatter the remaining berries over the top.
- Cover the dish and refrigerate for at least eight hours or overnight so the croissants can absorb all that flavor.
- When you’re ready to bake, take the dish out of the refrigerator and let it sit while the oven heats to 325 degrees F. Cover with foil and bake for about 30 minutes. Remove the foil and continue baking for another 25 to 30 minutes, until the top is lightly golden and the center is set.
- Finish with a sprinkle of toasted almonds and a light dusting of powdered sugar. Serve warm with maple syrup on the side.