Overnight Sausage, Egg and Croissant Breakfast Bake

Unwrap Morning Delight: Overnight Sausage, Egg, and Croissant Breakfast Bake

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Transform your mornings with the tantalizing aroma and delectable taste of the Overnight Sausage, Egg, and Croissant Breakfast Bake. This breakfast casserole is a symphony of flavors, blending savory sausage, fluffy eggs, and buttery croissants into a delightful culinary masterpiece. The best part? It can be prepared the night before, allowing you to wake up to a piping hot, stress-free breakfast. Join us on a journey as we guide you through the creation of this mouthwatering morning treat that will make breakfast the highlight of your day.

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For the Casserole Base:

  • 8 large croissants, split and cut into chunks
  • 1 pound breakfast sausage, cooked and crumbled
  • 2 cups shredded cheddar cheese
  • 1/4 cup chopped fresh chives
  • 1/4 cup chopped fresh parsley

For the Egg Mixture:

  • 10 large eggs
  • 2 cups whole milk
  • 1 teaspoon Dijon mustard
  • Salt and black pepper to taste

For Topping:

  • 1 cup cherry tomatoes, halved
  • 1/2 cup shredded mozzarella cheese


  1. Prepare the Casserole Base:
    • Grease a 9×13-inch baking dish.
    • Spread the croissant chunks evenly in the baking dish.
    • Sprinkle the cooked and crumbled sausage, shredded cheddar cheese, chives, and parsley over the croissants.
  2. Whisk the Egg Mixture:
    • In a large bowl, whisk together eggs, whole milk, Dijon mustard, salt, and black pepper until well combined.
  3. Pour Egg Mixture Over Croissants:
    • Pour the egg mixture evenly over the croissants, ensuring each piece is coated. Press down slightly to allow the croissants to absorb the liquid.
  4. Top with Tomatoes and Mozzarella:
    • Arrange halved cherry tomatoes on top and sprinkle shredded mozzarella cheese for a burst of freshness and gooey goodness.
  5. Cover and Refrigerate:
    • Cover the baking dish with plastic wrap and refrigerate overnight or for at least 6 hours. This allows the croissants to soak up the egg mixture.
  6. Preheat and Bake:
    • Preheat your oven to 350°F (175°C).
    • Remove the plastic wrap and bake the casserole for 40-45 minutes or until the top is golden brown, and the center is set.
  7. Rest and Garnish:
    • Allow the casserole to rest for 10 minutes before slicing. This ensures a perfectly set center and easy serving.
    • Garnish with additional chives and parsley for a touch of freshness.
  8. Serve and Enjoy:
    • Slice into squares, serve warm, and savor the layers of croissants, savory sausage, and velvety eggs.

Cook Notes:

  • Croissant Quality: Opt for high-quality croissants with a buttery and flaky texture. Day-old croissants work exceptionally well for better absorption of the egg mixture.
  • Sausage Choice: Experiment with different sausage varieties, such as maple-flavored or spicy, to add a unique twist to the casserole.
  • Soaking Time: Allowing the croissants to soak in the egg mixture overnight ensures a rich and flavorful casserole.
  • Customizing Cheese: Feel free to experiment with different cheese blends or add your favorite cheeses for a personalized touch.


Vegetarian Delight:

  • Omit the sausage and add sautéed mushrooms, spinach, and bell peppers for a vegetarian version.

Herb-Infused Elegance:

  • Incorporate fresh herbs like thyme, rosemary, or basil into the egg mixture for an aromatic and flavorful twist.

Caprese Twist:

  • Replace cheddar cheese with fresh mozzarella and add basil leaves for a Caprese-inspired breakfast bake.

Keto Version:

  • Substitute croissants with keto-friendly croissants made from almond or coconut flour.
  • Choose keto-friendly sausage without added sugars.
  • Use unsweetened almond milk or another low-carb milk substitute in the egg mixture.

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Low-Carb Version:

  • Replace croissants with a low-carb bread alternative or use cauliflower bites for a carb-conscious option.
  • Choose low-carb sausage and use a low-carb milk substitute in the egg mixture.
  • Customize the casserole with low-carb vegetables like zucchini or spinach.

The Overnight Sausage, Egg, and Croissant Breakfast Bake redefine the breakfast experience, offering a perfect balance of convenience and gourmet indulgence. Whether you embrace the classic version or embark on creative variations, this casserole is sure to become a breakfast favorite. So, make your mornings stress-free and delicious with this irresistible breakfast bake that turns ordinary mornings into extraordinary moments.

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