Overnight Croissant Breakfast Casserole Bake
This Overnight Croissant Breakfast Casserole Bake is a rich and savory dish perfect for breakfast or brunch gatherings. Flaky croissants are layered with eggs, cheese, sausage, and spices, then soaked overnight for maximum flavor. It’s an easy make-ahead dish that guarantees a delicious, stress-free morning!
- Prep Time: 15 minutes
- Cook Time: 45 minutes
- Total Time: 1 hour
- Yield: 8 servings 1x
- Category: Breakfast, Brunch
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Ingredients
Scale
- 6 large croissants, torn into chunks
- 1 lb (450g) breakfast sausage, cooked and crumbled
- 1 cup shredded cheddar cheese
- 1 cup shredded mozzarella cheese
- 8 large eggs
- 2 cups whole milk
- 1 cup heavy cream
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 1/2 teaspoon garlic powder
- 1/4 teaspoon onion powder
- 1/4 teaspoon smoked paprika
- 2 green onions, thinly sliced (optional garnish)
Instructions
- Grease a 9×13-inch baking dish and place the torn croissant pieces evenly across the bottom.
- Sprinkle the cooked sausage evenly over the croissants, followed by the cheddar and mozzarella cheeses.
- In a large mixing bowl, whisk together the eggs, milk, heavy cream, salt, pepper, garlic powder, onion powder, and smoked paprika.
- Pour the egg mixture evenly over the croissant and sausage layers, pressing down gently to ensure all pieces are soaked.
- Cover the dish with plastic wrap or aluminum foil and refrigerate overnight (at least 6 hours).
- Preheat your oven to 350°F (175°C). Remove the casserole from the refrigerator and let it sit at room temperature for 20–30 minutes.
- Bake uncovered for 40–45 minutes, or until the casserole is golden brown and set in the center.
- Allow the casserole to cool for 5–10 minutes before slicing. Garnish with green onions, if desired, and serve warm.
Notes
- Feel free to substitute the sausage with cooked bacon or ham for variety.
- Add a handful of spinach or diced bell peppers for extra vegetables.
- This casserole freezes well. Store leftovers in an airtight container in the freezer for up to 3 months.