Blueberry Brioche Breakfast Casserole: A Cozy Start to Your Day
Hey there! If you’re anything like me, breakfast is one of the best meals of the day—a chance to slow down, enjoy something delicious, and maybe savor a cup of coffee or tea. Today, I want to share a personal favorite that feels like a little breakfast hug: a Blueberry Brioche Breakfast Casserole. It’s rich, fruity, and perfect for lazy weekend mornings or special gatherings. Plus, it’s incredibly simple to make!
Why I Love This Breakfast Casserole (And You Might Too!)
There’s something special about using brioche or challah bread in breakfast dishes. Both breads are buttery and slightly sweet, which makes this casserole taste like dessert—but the blueberries keep it fresh and bright. The soft, custardy inside with a golden, slightly crisp top is pure comfort. It’s also just one dish to bake, which means less mess and more time enjoying your meal.
The Nutritional Benefits
Let’s talk about the good stuff! Blueberries are packed with antioxidants and vitamins, great for keeping your immune system strong. Eggs provide protein to keep you energized through the morning. Using whole milk or half and half adds creaminess and some calcium, though you can tweak it depending on what you have or your dietary needs (I’ll share more on that soon!). And because you’re using real ingredients with no preservatives, you’re starting your day in a wholesome way.
Easy Swaps and Adaptations
- Dairy Swap: If you’re dairy-free, try using almond milk or oat milk with a little coconut cream for richness. The texture changes a bit but it’s still delicious.
- Gluten-Free Option: Look for gluten-free brioche or challah-style bread or use another sturdy gluten-free bread that holds up well soaked in custard.
- Fruit Variations: Swap out blueberries for raspberries, chopped strawberries, or even sliced peaches for a different fruity punch.
- Spice it Up: Add a pinch of nutmeg or a dash of cardamom along with cinnamon for a warm, cozy twist.
How to Make the Blueberry Brioche Breakfast Casserole
Ingredients
- 8–10 slices thick-cut brioche or challah bread, cut into cubes
- 2 cups fresh blueberries (plus extra for topping)
- 6 large eggs
- 2 cups whole milk (or half and half for extra richness)
- ¾ cup granulated sugar
- 1 teaspoon vanilla extract
- 1 teaspoon ground cinnamon (optional but recommended)
- ¼ teaspoon salt
- Butter (for greasing the baking dish)
- Powdered sugar (for dusting)
- Maple syrup (for serving)
Step-By-Step Instructions
- Preheat your oven to 350°F (175°C). Grease a 9×13 inch baking dish with butter so nothing sticks.
- Cut the brioche or challah into cubes about 1 to 1.5 inches in size, then set them aside.
- In a big bowl, whisk together the eggs, milk, granulated sugar, vanilla extract, cinnamon (if you’re using it), and salt until everything is smooth and well mixed.
- Gently fold the bread cubes into the egg mixture, making sure all the bread is coated nicely. Then, add the 2 cups of fresh blueberries and fold them in carefully so they don’t get crushed.
- Pour this soaked, delicious mix into your buttered baking dish. Spread it out evenly and press lightly so the bread soaks up the custard well.
- Let your casserole soak for at least 30 minutes at room temperature. If you have the time, refrigerate it overnight—this makes the texture extra creamy and flavorful.
- Bake uncovered for 45–55 minutes. You’re looking for a golden, slightly crisp top and custard that’s set. A toothpick poked in the middle should come out mostly clean.
- Take it out and let it cool for about 10 minutes. This helps it set up so it serves nicely.
- Dust powdered sugar on top and sprinkle some extra fresh blueberries for a pretty finish.
- Serve warm with a generous drizzle of maple syrup. Trust me, it’s a game changer!
Helpful Tips I’ve Learned Along the Way
- Make Ahead: This casserole is actually better after it sits! Preparing it the night before lets all the flavors marry beautifully.
- Don’t Rush the Soak: The soaking time makes the bread soft and custardy inside. If you’re short on time, let it soak while your oven preheats at least.
- Powdered Sugar for Elegance: A light dusting of powdered sugar brightens up the dish and makes it feel extra special.
- Extra Blueberries: Adding fresh berries on top right before serving gives a fresh burst and adds a lovely color contrast.
- Storing Leftovers: Store leftovers covered in the fridge for up to 3 days. Reheat gently in the oven or microwave with a little maple syrup to bring it back to life.
Equipment You’ll Need
- 9×13 inch baking dish
- Large mixing bowl
- Whisk or fork for mixing
- Measuring cups and spoons
- Spatula or spoon to fold ingredients
- Knife and cutting board to cube the bread
Frequently Asked Questions
- Can I use frozen blueberries? Yes! Just thaw them first and drain any excess juice to avoid sogginess.
- What if I don’t have brioche or challah? Use any thick, sturdy bread like a French baguette or even good-quality white bread, but brioche or challah is best for richness.
- Can I double this recipe? Definitely! Just use a larger baking dish and adjust cooking time slightly if needed.
- Is it okay to add nuts? Absolutely! Try folding in chopped pecans or walnuts for extra crunch and flavor.
- How do I know if it’s fully cooked? The top should be golden and firm, edges slightly crisp. A toothpick in the center should come out mostly clean with just a little moisture.
Let’s Connect!
I hope this Blueberry Brioche Breakfast Casserole becomes one of your go-to recipes like it has for me. It’s just that kind of dish that makes mornings feel cozy and special. If you try it, I’d love to see your photos or hear how you customized it! Follow me on Pinterest for more tasty and simple recipes that brighten your day. Happy cooking!

