Ingredients
Croissant Base
- 6 large croissants, cut into pieces
Sausage & Cheese
- 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
Instructions
- Prepare the Baking Dish: Grease a 9×13-inch baking dish. Arrange the cut croissant pieces evenly in the bottom to create a base layer.
- Add Sausage and Cheese: Sprinkle the cooked, crumbled sausage evenly over the croissants, then top with the shredded cheddar cheese for even coverage and melty bites in every slice.
- Make the Egg Mixture: In a large bowl, whisk together the eggs, milk, dry mustard, salt, and black pepper until smooth and fully combined for a creamy custard.
- Assemble the Casserole: Carefully pour the egg mixture evenly over the croissant, sausage, and cheese layers. Press down gently with a spatula or your hands to help the croissants absorb the custard.
- Refrigerate: Cover the baking dish with plastic wrap and refrigerate overnight, or for at least 2 hours. This helps the croissants fully soak up the flavors and ensures a perfect texture after baking.
- Bake: When ready to bake, preheat your oven to 350°F (175°C). Remove the casserole from the fridge and let it sit at 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.
- Serve: Let the casserole cool for a few minutes before slicing into squares. Serve warm and enjoy your effortless, delicious breakfast!
Notes
- Use store-bought or bakery croissants, as either will work well.
- For a vegetarian version, swap sausage for sautéed veggies like spinach, peppers, or mushrooms.
- You can prepare and refrigerate this up to 24 hours in advance for extra convenience.
- This casserole can be frozen unbaked for up to 2 months. Thaw in the refrigerator before baking.
- Leftovers keep in the fridge for up to 3 days. Reheat in the oven or microwave before serving.
- Feel free to experiment with different cheeses or add-ins like diced jalapeños or herbs.
- Letting the casserole rest before serving makes for cleaner slices and better flavor.
- Prep Time: 20 minutes
- Cook Time: 45 minutes
- Category: Breakfast
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Nutrition
- Serving Size: 1/8 of casserole
- Calories: 450
- Sugar: 6g
- Sodium: 850mg
- Fat: 29g
- Saturated Fat: 13g
- Unsaturated Fat: 14g
- Trans Fat: 0g
- Carbohydrates: 24g
- Fiber: 1g
- Protein: 21g
- Cholesterol: 220mg
