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Overnight Croissant Breakfast Casserole

This creamy and comforting casserole combines buttery croissants, eggs, and cheese, making it a perfect choice for lazy weekend brunches or holiday mornings with family.
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Prep Time 15 minutes
Cook Time 35 minutes
Total Time 50 minutes
Servings: 6 servings
Course: Breakfast, Brunch
Cuisine: American
Calories: 410
Ingredients Method Notes

Ingredients
  

Main Ingredients
  • 6 large large croissants, torn into pieces Use stale croissants for best results.
  • 6 large large eggs
  • 2 cups milk Almond or soy milk can be used for a vegan version.
  • 1 cup shredded cheese (e.g., cheddar or Swiss) Cheese choices can include pepper jack for a spicy kick.
  • 1/2 cup cooked and crumbled sausage or bacon (optional) Optional for meat lovers.
Seasonings and Additional Flavorings
  • 1/4 cup chopped fresh herbs (e.g., parsley or chives)
  • Salt and pepper to taste
  • 1 teaspoon vanilla extract (optional) Optional for added flavor.
  • 1/4 teaspoon ground nutmeg or cinnamon (optional) Cinnamon can add a sweet twist.

Method
 

Preparation
  1. Grease a 9×13 inch baking dish.
  2. Place torn croissant pieces in the dish.
  3. In a bowl, whisk together eggs, milk, salt, pepper, and vanilla (if using).
  4. Pour the egg mixture over the croissants.
  5. Sprinkle with cheese, sausage or bacon (if using), and herbs.
  6. Press down lightly to soak the croissants.
  7. Cover and refrigerate overnight.
Baking
  1. Preheat oven to 350°F (175°C).
  2. Bake, uncovered, for 30-35 minutes or until set and golden brown.
  3. Let cool slightly before serving.

Notes

This casserole keeps well in the fridge for 3-4 days. For freezing, wrap individual portions in plastic wrap and foil.