If you’re looking for a stress-free and delicious breakfast to start your day, this Overnight Breakfast Casserole is the perfect solution! Packed with juicy berries, hearty bread, and natural sweetness, this make-ahead dish is a lifesaver for busy mornings, brunch gatherings, and holiday breakfasts.

Why You’ll Love This Overnight Breakfast Casserole

• Effortless Preparation: Assemble it the night before, then bake in the morning!
• Nutritious & Delicious: Filled with fiber-rich berries, whole grains, and natural sweeteners.
• Perfect for a Crowd: Serves multiple people with minimal effort.
• Customizable: Swap ingredients to fit dietary preferences.

Ingredients

• 6 cups berries (32 oz, use a mix of strawberries, blueberries, raspberries, or blackberries)
• 1 lb thick bread (French bread, brioche, or whole grain bread works best)
• 1 1/3 cup applesauce or mashed banana
• 2/3 cup milk of choice (dairy or non-dairy options work well)
• 2/3 cup egg whites or additional milk of choice
• 1/4 cup pure maple syrup, agave, or honey
• 1 tsp pure vanilla extract (optional, but enhances flavor)

Instructions

1. Prepare the Bread

If the bread is not slightly hard, let it sit uncovered for a day before using, or bake the slices at 300°F (150°C) for 15 minutes to dry them out. This helps the casserole absorb the liquid without becoming mushy.

2. Assemble the Casserole

• Grease a 9×13-inch baking dish.
• Cut the bread into 1-inch cubes and layer them evenly in the dish.
• In a bowl, whisk together the applesauce, milk, egg whites, maple syrup, and vanilla.
• Pour the mixture evenly over the bread, ensuring every piece is soaked.
• Spread the berries evenly on top.

3. Refrigerate Overnight

• Cover the casserole with plastic wrap or foil and refrigerate overnight. This allows the bread to soak up the flavors for a rich and custardy texture.

4. Bake & Serve

• The next morning, preheat the oven to 350°F (175°C).
• Remove the cover and bake for 1 hour, or until the bread is lightly golden and set in the center.
• Serve warm or cold with extra berries, a drizzle of maple syrup, or a dusting of powdered sugar!

Expert Tips for the Best Overnight Breakfast Casserole

• Use sturdy bread like sourdough, challah, or whole grain to avoid sogginess.
• Dairy-Free Option: Swap regular milk for almond, oat, or coconut milk.
• Gluten-Free Alternative: Use your favorite gluten-free bread.
• Add Texture: Sprinkle chopped nuts or coconut flakes on top before baking.
• Sweeten Naturally: If you prefer a less sweet version, reduce the maple syrup and add extra fruit for natural sweetness.

Frequently Asked Questions

Can I Make This Casserole Without Eggs?

Yes! Simply use extra milk or a flaxseed egg substitute (1 tbsp flaxseed + 3 tbsp water per egg) for a vegan version.

How Long Does It Keep?

This casserole stays fresh in the refrigerator for 3-4 days. Reheat individual portions in the microwave or enjoy it cold.

Can I Freeze It?

Absolutely! Freeze baked portions in an airtight container for up to 3 months. Thaw overnight in the fridge and reheat in the oven at 350°F for 10-15 minutes.

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