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Overnight Croissant Breakfast Casserole Recipe

Overnight Croissant Breakfast Casserole Recipe


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4.7 from 16 reviews

  • Total Time: 55 minutes - 1 hour
  • Yield: 6 1x

Description

Overnight croissant breakfast casserole delivers pure morning comfort straight from French culinary traditions, promising a delightful start to your day. Creamy eggs, buttery croissants, and savory cheese meld together in one pan for a breakfast that feeds the whole family with minimal morning effort.


Ingredients

Scale

Main Ingredients:

  • 6 large croissants
  • 1 lb breakfast sausage
  • 2 cups shredded cheddar cheese

Binding Ingredients:

  • 6 large eggs
  • 2 cups milk

Seasonings:

  • 1 teaspoon dry mustard
  • ½ teaspoon salt
  • ¼ teaspoon black pepper

Instructions

  1. Grease a 9×13-inch baking dish thoroughly with cooking spray or butter, ensuring complete coverage for easy serving.
  2. Tear 6 large croissants into 1-inch chunks and distribute them uniformly across the bottom of the prepared baking dish.
  3. Sprinkle 1 pound of pre-cooked, crumbled breakfast sausage evenly over the croissant pieces.
  4. Scatter 2 cups of shredded cheddar cheese across the sausage layer, creating an even distribution.
  5. Whisk 6 large eggs in a mixing bowl, combining them with 2 cups of milk, 1 teaspoon dry mustard, ½ teaspoon salt, and ¼ teaspoon black pepper until smooth.
  6. Carefully pour the egg mixture over the croissant layers, gently pressing down to help the bread absorb the liquid.
  7. Cover the casserole with plastic wrap and refrigerate for 8-12 hours, allowing flavors to meld and croissants to soak completely.
  8. Remove the casserole from the refrigerator 30 minutes before baking to bring it closer to room temperature.
  9. Preheat your oven to 350°F and position a rack in the center of the oven.
  10. Bake the uncovered casserole for 40-45 minutes, watching for a golden-brown top and a set custard center.
  11. Remove from the oven and let the casserole rest for 5-7 minutes before slicing and serving warm.

Notes

  • Let croissants be slightly stale for better absorption of egg mixture, creating a richer texture.
  • Choose high-quality sharp cheddar or gruyère cheese to elevate the casserole’s overall flavor profile.
  • For a vegetarian version, swap sausage with sautéed mushrooms, spinach, or roasted bell peppers.
  • Cover with foil during the last 10 minutes of baking if the top browns too quickly, preventing burning.
  • Prep Time: 15 minutes
  • Cook Time: 40-45 minutes
  • Category: Casseroles
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 6
  • Calories: 675
  • Sugar: 4 g
  • Sodium: 1080 mg
  • Fat: 50 g
  • Saturated Fat: 22 g
  • Unsaturated Fat: 25 g
  • Trans Fat: 1 g
  • Carbohydrates: 30 g
  • Fiber: 2 g
  • Protein: 35 g
  • Cholesterol: 320 mg