Simple Blueberry French Toast Casserole for Weekend Mornings

Featured in Morning Favorite.

Easy Blueberry French Toast Casserole recipe. Perfect for a relaxed brunch with juicy blueberries and golden custard. Prep ahead for stress-free mornings!
Casey - Recipe Author
Updated on Fri Jan 09 2026 at 08:53 AM
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Simple Blueberry French Toast Casserole for Weekend Mornings | Recipes by HomeChef

Honestly, I remember the first time I tried to make a proper breakfast casserole. It was a Saturday, I had friends coming over, and I was envisioning this picture-perfect brunch spread. What I got was soggy bread and scrambled eggs that tasted… well, not great. I was a mess, flour everywhere, a total kitchen disaster. But then, my neighbor, bless her heart, shared her secret for a truly amazing Blueberry French Toast Casserole. This recipe, hon, it changed everything. It’s got that comforting, sweet smell that just makes you feel hugged, even before you take a bite. It’s special because it turns my chaotic mornings into something calm and delicious, and it tastes like pure joy.

One time, I was making this for a holiday brunch and, in my haste, I grabbed the almond extract instead of vanilla. Oops! My kitchen smelled like a fancy bakery, but the taste was… unexpected. My family still laughs about "the almond year." It just goes to show, even with a tried-and-true recipe, kitchen chaos is always lurking, but usually, it turns out delicious anyway!

Blueberry French Toast Casserole Ingredients

  • Stale Bread (Challah or Brioche): This is the key. Don't use fresh, squishy bread, just don't! Stale bread soaks up all that custardy goodness without turning into a mushy mess. I usually let mine sit out overnight, or if I'm impatient, a quick toast in the oven works wonders.
  • Large Eggs: The heart of our custard! I always use large eggs, and honestly, don't skimp. They bind everything together and give it that rich, eggy texture. I tried fewer once, and it just wasn't the same, the casserole fell apart a bit, kinda sad.
  • Whole Milk: For that creamy, decadent custard. Please, for the love of all that is delicious, use whole milk. Skim milk just doesn't deliver the same richness, and you'll notice it, trust me. I tried half-and-half once for extra richness, and it was glorious, but whole milk is my standard.
  • Granulated Sugar: Sweetness! It balances the eggs and berries. You can adjust this a little, but don't cut too much, or it won't feel like a treat. I like to add a tiny bit more if my blueberries aren't super sweet.
  • Vanilla Extract: Pure magic. It adds warmth and depth to the custard. I'm a heavy-handed vanilla user, a good quality extract makes all the difference. That smell when it hits the warm milk? Oh, it's heavenly!
  • Ground Cinnamon: A touch of spice that just screams "breakfast comfort." It pairs beautifully with blueberries. I sometimes add a pinch of nutmeg too if I'm feeling fancy, it just elevates the whole thing.
  • Fresh Blueberries: The stars of the show! Fresh are best here, they burst beautifully when baked. I've used frozen in a pinch, but they can make the casserole a little wetter, so maybe toss them in a tablespoon of flour first to prevent sinking.
  • Unsalted Butter: For greasing the dish and for that lovely topping. It adds flavor and helps with browning. I always use unsalted so I can control the salt level.
  • Brown Sugar (for topping): Creates a slightly crisp, caramelized top. That crunch is so good against the soft custard! I once forgot this and it was still tasty, but that extra texture was definitely missed.

Instructions

Prep Your Bread:
First things first, get that bread ready! Tear your stale challah or brioche into about 1-inch cubes. You want them to be fairly uniform so they cook evenly. This is where I usually get a little messy, bread crumbs everywhere, but it's part of the fun, right? Arrange the cubes in a single layer in a greased 9x13 inch baking dish. Don't press them down too much, we want some air for that custard to get into. I love the smell of the slightly toasted bread, it's already promising good things.
Whip Up the Custard:
In a large bowl, whisk together your eggs, whole milk, granulated sugar, vanilla extract, and cinnamon. Whisk it really well, hon, until everything is fully combined and the sugar has dissolved. You don't want any streaks of egg white. I always take a quick sniff of the mixture it smells so sweet and warm, like a hug in a bowl! This is where you might be tempted to use skim milk, but trust me, resist the urge. That whole milk makes all the difference for a rich, creamy casserole.
Soak the Bread:
Pour that glorious custard mixture evenly over your bread cubes in the baking dish. Gently press the bread down with a spoon or your clean hands to make sure every single piece gets soaked. This is crucial for that soft, custardy texture. I always let it sit for a few minutes, even if I'm short on time, just to ensure maximum absorption. You'll see the bread start to plump up, soaking in all that goodness it's a beautiful sight!
Add the Blueberries:
Sprinkle your fresh blueberries evenly over the soaked bread. Don't be shy! I love a good burst of berry in every bite. If you're using frozen berries, remember my tip about tossing them in a bit of flour first, it helps them stay suspended and not sink to the bottom like little blue rocks. I once forgot to do that, and all my blueberries ended up in a sad layer at the very bottom. Live and learn, right?
Chill Out (or Bake Now!):
Now, you've got options! For the best results, cover the dish with plastic wrap and refrigerate for at least 4 hours, or even better, overnight. This really lets the bread soak up all the custard, making for an incredibly tender Blueberry French Toast Casserole. If you're in a pinch, you can bake it right away, but the overnight soak is a game-changer. I usually prep it the night before, waking up knowing breakfast is practically done is such a relief.
Bake and Serve:
When you're ready to bake, preheat your oven to 375°F (190°C). If it's been chilling, let it sit out for about 20-30 minutes to come closer to room temperature. Dot the top with small pieces of butter and sprinkle with brown sugar. Bake for 40-50 minutes, or until golden brown and puffed, and a knife inserted into the center comes out clean. The top should be slightly crisp, and the inside wonderfully soft. That smell filling your kitchen is just heavenly! Let it cool for a few minutes before serving, then dive into your homemade Blueberry French Toast Casserole!

Honestly, there’s something so satisfying about pulling this Blueberry French Toast Casserole out of the oven. It's golden, bubbly, and smells like pure happiness. Sometimes, my little one will come running into the kitchen, drawn by the scent, and that’s when I know I’ve done something right. It’s not just breakfast, it’s a moment, a memory being made right there in my messy kitchen.

Storing Your Blueberry French Toast Casserole

So, you've got leftovers of this delicious Blueberry French Toast Casserole? Lucky you! Once completely cooled, cover the baking dish tightly with plastic wrap or transfer individual portions to airtight containers. It'll keep beautifully in the fridge for up to 3-4 days. To reheat, I usually pop a slice in the microwave for a minute or two, but honestly, for the best results, a toaster oven or even a regular oven at 300°F (150°C) for about 10-15 minutes works wonders. It brings back that slight crispness on top. I microwaved it once and the sauce separated a little, making it slightly soggy so don't do that if you can avoid it, lol. It also freezes well! Wrap individual portions tightly in foil and then place them in a freezer-safe bag. Thaw overnight in the fridge and reheat as desired. It’s a great make-ahead option!

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Simple Blueberry French Toast Casserole for Weekend Mornings - Image 1 | Recipes by HomeChef

Blueberry French Toast Casserole Substitutions

I'm all about making recipes work with what you have, and this Blueberry French Toast Casserole is pretty forgiving! If you don't have challah or brioche, a good quality sourdough or even thick-cut white bread can work, just make sure it's stale. I tried it once with regular sandwich bread, and it worked, kinda, but the texture wasn't as luxurious. For the milk, you can use a plant-based milk like almond or oat milk for a dairy-free version, though it might be slightly less rich. I've used almond milk before, and it was still tasty! No fresh blueberries? Frozen ones are totally fine, just toss them in a tablespoon of flour before adding them to the casserole to prevent them from sinking. You could even swap out the blueberries for other berries, like raspberries or sliced strawberries, or even a mix! I tried a mixed berry version once, and it was a delightful surprise. Get creative!

Serving Suggestions

This Blueberry French Toast Casserole is a star on its own, but a few little extras just make it sing! I love serving it with a drizzle of warm maple syrup it's non-negotiable in my house. A dollop of whipped cream or a scoop of vanilla ice cream if you're feeling extra indulgent (which, let's be real, you should be!). For a bit of freshness, a sprinkle of powdered sugar and a few extra fresh berries on top make it look so pretty. As for drinks, a strong cup of coffee or a mimosa feels just right for a weekend brunch. This dish and a rom-com on a lazy Sunday morning? Yes, please. It's also fantastic alongside some crispy bacon or sausage for a sweet and savory balance. Sometimes, I even add a side of fresh fruit salad to cut through the richness. It’s versatile for any mood or occasion!

Cultural Backstory

French toast, in its many forms, has such a rich history, dating back to Roman times, believe it or not! But the casserole version, especially a sweet one like this Blueberry French Toast Casserole, feels like a more modern American twist, born from the desire for easy, crowd-plepleasing breakfasts. It’s about taking that classic eggy bread and transforming it into something even more comforting and effortless, especially when feeding a family or guests. For me, this casserole became special during my early days of hosting brunches. It felt like a culinary coming-of-age, I could finally create something impressive without the morning scramble. It embodies that feeling of warm hospitality and shared joy around the breakfast table, a blend of traditional comfort and modern convenience that always brings smiles to faces.

Honestly, this Blueberry French Toast Casserole isn't just a recipe, it's a little slice of comfort, a promise of a good morning. Every time I make it, it feels like a warm hug, a reminder of those precious moments shared around the breakfast table. I hope it brings as much joy to your kitchen as it does to mine. Don't be shy, give it a try, and tell me how your version turns out!

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Simple Blueberry French Toast Casserole for Weekend Mornings - Image 2 | Recipes by HomeChef

Frequently Asked Questions

→ Can I make this Blueberry French Toast Casserole ahead of time?

Oh, absolutely! That's my favorite way to do it. Assemble everything the night before, cover it, and pop it in the fridge. It lets the bread really soak up all that custard, making for an even more tender result. Just pull it out to warm up a bit before baking.

→ What kind of bread works best for this recipe?

Honestly, challah or brioche are the dream team here because they're rich and soak up liquid beautifully without falling apart. But if you don't have those, a good sturdy sourdough or even a thick-cut white bread that's a day or two old will work great. Just make sure it's stale!

→ My casserole came out soggy. What did I do wrong?

Ah, the dreaded soggy bottom! Usually, that happens if your bread wasn't stale enough, or if you didn't let it soak long enough. Also, don't overcrowd the dish. Make sure the casserole is baked until golden brown and a knife inserted comes out clean, sometimes it just needs a few more minutes!

→ How do I store leftovers of this Blueberry French Toast Casserole?

Just cover it tightly and keep it in the fridge for up to 3-4 days. Reheating in a toaster oven or regular oven is best for keeping that lovely texture, I learned the hard way that the microwave can make it a little too soft sometimes, lol. It freezes well too!

→ Can I use frozen blueberries instead of fresh?

Yep, you totally can! I do it all the time when fresh aren't in season. My trick is to toss them in about a tablespoon of flour before adding them to the casserole. It helps prevent them from sinking to the bottom and keeps the casserole from getting too watery. Works a charm!

Simple Blueberry French Toast Casserole for Weekend Mornings

Easy Blueberry French Toast Casserole recipe. Perfect for a relaxed brunch with juicy blueberries and golden custard. Prep ahead for stress-free mornings!

4 out of 5
(64 reviews)
Prep Time
15 Minutes
Cook Time
50 Minutes
Total Time
1 Hour 5 Minutes (plus soaking)
By: Casey

Category: Morning Favorite

Difficulty: Beginner

Cuisine: American

Yield: 8 Servings

Dietary: Vegetarian

Published: Thu Nov 13 2025 at 05:39 AM

Last Updated: Fri Jan 09 2026 at 08:53 AM

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Ingredients

→ Casserole Base

01 1 loaf (13-16 oz) stale challah or brioche bread, torn into 1-inch cubes
02 1 cup fresh blueberries

→ Custard Mixture

03 8 large eggs
04 2 cups whole milk
05 1/2 cup granulated sugar
06 2 teaspoons vanilla extract
07 1 teaspoon ground cinnamon

→ Sweet Finish

08 2 tablespoons unsalted butter, cut into small pieces
09 2 tablespoons brown sugar

→ Optional Extras

10 Pinch of ground nutmeg
11 Lemon zest for brightness
12 Maple syrup, whipped cream, or powdered sugar for serving

Instructions

Step 01

First things first, get that bread ready! Tear your stale challah or brioche into about 1-inch cubes. You want them to be fairly uniform so they cook evenly. This is where I usually get a little messy, bread crumbs everywhere, but it's part of the fun, right? Arrange the cubes in a single layer in a greased 9x13 inch baking dish. Don't press them down too much, we want some air for that custard to get into. I love the smell of the slightly toasted bread, it's already promising good things.

Step 02

In a large bowl, whisk together your eggs, whole milk, granulated sugar, vanilla extract, and cinnamon. Whisk it really well, hon, until everything is fully combined and the sugar has dissolved. You don't want any streaks of egg white. I always take a quick sniff of the mixture – it smells so sweet and warm, like a hug in a bowl! This is where you might be tempted to use skim milk, but trust me, resist the urge. That whole milk makes all the difference for a rich, creamy casserole.

Step 03

Pour that glorious custard mixture evenly over your bread cubes in the baking dish. Gently press the bread down with a spoon or your clean hands to make sure every single piece gets soaked. This is crucial for that soft, custardy texture. I always let it sit for a few minutes, even if I'm short on time, just to ensure maximum absorption. You'll see the bread start to plump up, soaking in all that goodness – it's a beautiful sight!

Step 04

Sprinkle your fresh blueberries evenly over the soaked bread. Don't be shy! I love a good burst of berry in every bite. If you're using frozen berries, remember my tip about tossing them in a bit of flour first, it helps them stay suspended and not sink to the bottom like little blue rocks. I once forgot to do that, and all my blueberries ended up in a sad layer at the very bottom. Live and learn, right?

Step 05

Now, you've got options! For the best results, cover the dish with plastic wrap and refrigerate for at least 4 hours, or even better, overnight. This really lets the bread soak up all the custard, making for an incredibly tender Blueberry French Toast Casserole. If you're in a pinch, you can bake it right away, but the overnight soak is a game-changer. I usually prep it the night before, waking up knowing breakfast is practically done is such a relief.

Step 06

When you're ready to bake, preheat your oven to 375°F (190°C). If it's been chilling, let it sit out for about 20-30 minutes to come closer to room temperature. Dot the top with small pieces of butter and sprinkle with brown sugar. Bake for 40-50 minutes, or until golden brown and puffed, and a knife inserted into the center comes out clean. The top should be slightly crisp, and the inside wonderfully soft. That smell filling your kitchen is just heavenly! Let it cool for a few minutes before serving, then dive into your homemade Blueberry French Toast Casserole!

Notes

  1. Always use stale bread for the best texture, fresh bread turns mushy, trust me.
  2. For make-ahead magic, assemble the casserole the night before and let it soak in the fridge.
  3. If using frozen blueberries, toss them in a tablespoon of flour to prevent them from sinking.
  4. A sprinkle of lemon zest in the custard adds a surprising, bright lift to the flavors.

Tools You'll Need

  • 9x13 inch baking dish
  • large mixing bowl
  • whisk
  • measuring cups and spoons

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Dairy
  • Eggs
  • Wheat

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 450 kcal
  • Total Fat: 20g
  • Total Carbohydrate: 55g
  • Protein: 15g

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