Overnight Croissant Breakfast Casserole Recipe

Introduction

Start your day with a comforting and delicious Overnight Croissant Breakfast Casserole. This easy-to-make dish layers flaky croissants with savory sausage and melted cheese, all soaked in a flavorful egg custard. Perfect for busy mornings or weekend brunches.

Ingredients

• 6 large croissants, cut into pieces
• 1 lb breakfast sausage, cooked and crumbled
• 2 cups shredded cheddar cheese
• 6 large eggs
• 2 cups milk
• 1 teaspoon dry mustard
• 1/2 teaspoon salt
• 1/4 teaspoon black pepper

Instructions

1. Step 1: Grease a 9×13-inch baking dish. Arrange the croissant pieces evenly in the dish.
2. Step 2: Sprinkle the cooked and crumbled sausage over the croissants, then top with shredded cheddar cheese.
3. Step 3: In a large bowl, whisk together the eggs, milk, dry mustard, salt, and black pepper until smooth and well combined.
4. Step 4: Pour the egg mixture evenly over the croissant, sausage, and cheese layers. Press down gently so the croissants absorb the liquid.
5. Step 5: Cover the dish with plastic wrap and refrigerate overnight or for at least 2 hours to allow the flavors to meld.
6. Step 6: Preheat the oven to 350°F (175°C). Remove the casserole from the fridge and let it sit at room temperature while the oven heats.
7. Step 7: Bake uncovered for 40-45 minutes, until the top is golden brown and the custard is set.
8. Step 8: Let the casserole cool for a few minutes before slicing. Serve warm and enjoy.

Tips & Variations

• For a vegetarian version, substitute the sausage with sautéed mushrooms or spinach.
• Add diced bell peppers or onions for extra flavor and texture.
• Use Swiss or mozzarella cheese instead of cheddar for a different taste.
• Make individual servings by layering ingredients in muffin tins before refrigerating and baking.

Storage

Store leftover casserole in an airtight container in the refrigerator for up to 3 days. Reheat portions in the microwave or oven until warmed through. This casserole can also be frozen for up to 1 month; thaw overnight in the refrigerator before reheating.

How to Serve

Serve this delicious recipe with your favorite sides.

FAQs

Can I use day-old croissants for this recipe?

Yes, day-old croissants work well as they absorb the egg mixture better, resulting in a custardy texture.

Can I prepare and bake this casserole on the same day?

While it’s best to refrigerate the casserole overnight for full flavor, you can refrigerate it for at least 2 hours or bake immediately. Just know the texture might be slightly less set.

Overnight Croissant Breakfast Casserole Recipe

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★★★★★

4.7 from 76 reviews

• Author: Charlotte
• Total Time: 12 hours (including refrigeration time)
• Yield: 8 servings 1x

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Description

This Overnight Croissant Breakfast Casserole is a delicious and hearty morning meal featuring buttery croissants, savory breakfast sausage, and melted cheddar cheese soaked in a flavorful custard. Prepared the night before and baked in the morning, this casserole is perfect for busy mornings or brunch gatherings, offering a comforting blend of textures and tastes.

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Ingredients

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Casserole Base

• 6 large croissants, cut into pieces
• 1 lb breakfast sausage, cooked and crumbled
• 2 cups shredded cheddar cheese

Egg Mixture

• 6 large eggs
• 2 cups milk
• 1 teaspoon dry mustard
• 1/2 teaspoon salt
• 1/4 teaspoon black pepper

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Instructions

1. Prepare the Baking Dish: Grease a 9×13-inch baking dish to prevent sticking, then evenly spread the croissant pieces across the bottom of the dish to form the base layer.
2. Add Sausage and Cheese: Sprinkle the cooked and crumbled breakfast sausage evenly over the croissants, followed by an even layer of shredded cheddar cheese to create flavorful layers.
3. Make the Egg Mixture: In a large bowl, whisk together the eggs, milk, dry mustard, salt, and black pepper until the mixture is smooth and well combined, forming the custard base for the casserole.
4. Assemble the Casserole: Pour the egg mixture over the layered croissants, sausage, and cheese. Gently press down on the ingredients to help the croissants soak up the liquid evenly.
5. Refrigerate: Cover the assembled casserole tightly with plastic wrap and refrigerate overnight or for at least 2 hours to allow flavors to meld and the croissants to absorb the custard.
6. Bake: Preheat your oven to 350°F (175°C). Remove the casserole from the refrigerator and let it come to room temperature while the oven heats. Bake uncovered for 40-45 minutes, or until the top is golden brown and the custard is set in the center.
7. Serve: Allow the casserole to cool for a few minutes after baking. Slice into portions and serve warm for a satisfying breakfast or brunch.

Notes

• You can substitute the breakfast sausage with cooked bacon or ham according to preference.
• Using day-old croissants helps them absorb the custard better without becoming too soggy.
• The casserole can be assembled up to 24 hours in advance for convenience.
• Add vegetables like sautéed spinach, bell peppers, or mushrooms for extra nutrition and flavor.
• Ensure the custard is fully set before removing from the oven to avoid a runny center.

• Prep Time: 15 minutes
• Cook Time: 40-45 minutes
• Category: Breakfast
• Method: Baking
• Cuisine: American

Keywords: overnight croissant casserole, breakfast casserole recipe, sausage and cheddar casserole, make ahead breakfast, savory breakfast bake