Rustic Bread Egg & Cheese Breakfast Bake

This Rustic Bread Egg & Cheese Breakfast Bake is an easy make-ahead breakfast casserole with French bread, eggs, cheddar, spinach, and onions. Perfect for brunch or holidays is an easy make-ahead breakfast casserole loaded with buttery French bread, fluffy eggs, melty cheddar cheese, fresh spinach, and onions. This hearty breakfast bake is perfect for Christmas morning, Easter brunch, weekend guests, or meal prep. Using day-old bread creates the perfect texture as it soaks up the rich egg custard and bakes into a golden, cheesy casserole everyone will love.

Eggs, Cheese & Bread Come Together in the Ultimate Breakfast Casserole

If you’re looking for an easy breakfast casserole that can be assembled ahead of time, this recipe is it. Day-old French bread absorbs a savory egg custard before baking into a fluffy, cheesy breakfast that’s comforting, filling, and incredibly versatile.

The combination of cheddar cheese, spinach, onions, and a dash of hot sauce creates plenty of flavor, while the recipe is easy to customize with your favorite vegetables, cheeses, or breakfast meats. Whether you’re serving brunch for a crowd or prepping breakfast for the week, this rustic egg bake is always a favorite.

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Ingredients in Rustic Bread Egg & Cheese Breakfast Bake 

• 4 cups day-old French bread, torn into 2-inch pieces (or gluten-free bread)
• 2 cups shredded cheddar cheese (Colby Jack or mozzarella also work well)
• 9 large eggs
• 1 cup chopped spinach
• ¼ cup milk
• ½ onion, finely diced
• 1 tablespoon butter, melted
• Salt and black pepper, to taste
• Dash of hot sauce (optional)
• Optional: cooked bacon or breakfast sausage

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How to Make Rustic Bread Egg & Cheese Breakfast Bake

1. Preheat oven to 350°F. Butter a 9×13-inch baking dish with the melted butter.
2. Arrange the bread pieces evenly across the bottom of the baking dish.
3. Finely dice the onion and chop the spinach.
4. In a large bowl, whisk together the eggs, milk, hot sauce (if using), salt, and pepper. Stir in the spinach and onion.
5. Pour the egg mixture evenly over the bread.
6. Sprinkle the shredded cheddar cheese evenly over the top.
7. Cover with foil and refrigerate for 30 to 60 minutes to allow the bread to soak up the egg mixture.
8. Bake covered for 30 minutes.
9. Remove the foil and continue baking for 5 to 10 minutes, or until the center is set and the cheese is lightly golden.
10. Let the casserole rest for 15 minutes before serving.

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Variations for Rustic Bread Egg & Cheese Breakfast Bake i

Make it Gluten-Free

Simply substitute your favorite gluten-free bread.

Try Different Cheeses

• Cheddar
• Colby Jack
• Mozzarella
• Provolone
• Pepper Jack
• Gruyère

Add More Vegetables

• Mushrooms
• Red bell peppers
• Broccoli
• Kale
• Green onions

Add Meat

• Breakfast sausage
• Bacon
• Ham
• Chorizo

Bread Options

• French bread
• Ciabatta
• Sourdough
• Italian bread
• French baguette

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Storing Leftovers

Store leftover Rustic Bread Egg & Cheese Breakfast Bake tightly covered in the refrigerator for up to 3 days. For best results, wrap the baking dish with plastic wrap or transfer leftovers to an airtight container to help retain moisture.

Reheat individual servings in the microwave for 1 to 2 minutes, or warm larger portions in a 325°F oven until heated through.

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Helpful Tips

• Day-old bread works best because it absorbs more of the egg custard without becoming soggy.
• Freshly shredded cheese melts better than pre-shredded cheese.
• Assemble the casserole the night before and bake it fresh in the morning.
• Let the casserole rest for 10–15 minutes before slicing for cleaner servings.