Cookies & Bars
Overnight Blueberry French Toast Casserole - Make-Ahead Breakfast Magic
My overnight blueberry French toast casserole is the perfect make-ahead breakfast! Bursting with juicy berries and topped with sweet streusel.
The Ultimate Make-Ahead Breakfast
This blueberry French toast casserole is my go-to for holiday mornings and weekend brunches. You assemble it the night before, and in the morning it just needs to pop in the oven. As the bread soaks overnight in that rich, vanilla-scented custard, it becomes incredibly tender and custardy. The cream cheese adds pockets of tangy richness, the blueberries release their sweet juices throughout, and that streusel topping creates the most delightful buttery, cinnamon-sugar crunch.
Baker’s Tips
- Use day-old brioche or challah — fresh bread will fall apart in the custard, while slightly stale bread holds its shape and absorbs perfectly. If you only have fresh bread, cube it and let it sit out uncovered for a few hours.
- The overnight rest is not just convenient, it is necessary. Rushing the soak time always produces inferior results.
- Let the casserole sit at room temperature for 15 minutes before baking to ensure even cooking throughout.
- If using frozen blueberries, add them directly from frozen to prevent excess moisture and color bleeding.
Variations
- Mixed Berry: Swap the blueberries for raspberries, blackberries, or a combination for a different berry profile.
- Lemon Blueberry: Add the zest of one lemon to the custard and use lemon extract instead of vanilla for a bright, citrusy twist.
- Croissant Version: Replace the brioche with cubed croissants for an even richer, more buttery casserole.
Ingredients
Casserole Base
Streusel Topping
For Serving
Instructions
- 1
Prepare the Bread Base
Grease a 9x13 inch baking dish with butter. Cut the day-old bread into 1-inch cubes and arrange half of them in the prepared dish. Scatter the cubed cream cheese and 1 cup of blueberries over the bread, then top with remaining bread cubes.
- 2
Make the Custard
In a large bowl, whisk together eggs, milk, heavy cream, granulated sugar, vanilla extract, cinnamon, and salt until well combined. Pour this custard mixture evenly over the bread, making sure all pieces are soaked. Gently press down with a spatula to help absorption.
- 3
Add Final Berries and Chill
Sprinkle the remaining 1/2 cup blueberries on top. Cover tightly with plastic wrap and refrigerate for at least 4 hours or overnight. This chilling time is crucial for the bread to absorb all the custard.
- 4
Prepare Streusel Topping
When ready to bake, preheat oven to 350°F (175°C). In a medium bowl, combine flour, brown sugar, cinnamon, and salt. Cut in cold butter using a pastry cutter or your fingers until mixture resembles coarse crumbs.
- 5
Bake the Casserole
Remove casserole from refrigerator and let sit at room temperature for 15 minutes. Sprinkle streusel topping evenly over the surface. Bake for 45-50 minutes until golden brown and center is set. A knife inserted in center should come out mostly clean.
- 6
Cool and Serve
Let cool for 10 minutes before serving. Cut into squares and serve warm with maple syrup, a dusting of powdered sugar, and extra fresh blueberries. Store leftovers covered in refrigerator for up to 3 days.
Nutrition Information
Per serving (serves 12). Values are approximate.
| Calories | 285 calories |
| Total Fat | 12g |
| Saturated Fat | 7g |
| Carbohydrates | 38g |
| Sugar | 22g |
| Protein | 9g |
| Sodium | 320mg |
| Fiber | 2g |
* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs. Nutritional information is an estimate and may vary.
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Frequently Asked Questions
Can I make blueberry French toast casserole with frozen blueberries?
Yes! You can use frozen blueberries, but don't thaw them first. Add them directly to the casserole frozen to prevent excess moisture and color bleeding. You may need to add 5-10 minutes to the baking time.
How long can I keep this casserole in the refrigerator before baking?
You can prepare this casserole up to 2 days ahead of time. The longer it sits, the better the bread absorbs the custard, resulting in an even more delicious French toast casserole.
What's the best bread to use for French toast casserole?
Day-old brioche or challah work best because they're rich and sturdy enough to absorb the custard without falling apart. French bread or thick-cut Texas toast are also excellent alternatives.
Reader Reviews
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