Go Back

Overnight Croissant Breakfast Casserole

A delightful casserole dish that combines buttery croissants, eggs, and cheese, perfect for busy mornings or family gatherings, all prepared the night before for convenience.
Print Recipe Pin Recipe
Prep Time 15 minutes
Cook Time 35 minutes
Total Time 50 minutes
Servings: 8 servings
Course: Breakfast, Brunch
Cuisine: American
Calories: 300
Ingredients Method Notes

Ingredients
  

Casserole Base
  • 6 pieces croissants, torn into pieces Provides a buttery, flaky texture that’s essential for the casserole.
  • 6 large eggs Acts as the base, creating a protein-packed and satisfying dish.
  • 2 cups milk Adds creaminess and helps achieve the perfect custard-like consistency.
  • 1 cup shredded cheese (cheddar or your choice) Offers melty goodness and can be adjusted based on personal preferences.
Optional Ingredients
  • 1 cup cooked sausage or ham A great way to add extra protein; feel free to swap it for veggies for a vegetarian option.
Seasoning
  • 1/2 teaspoon salt Enhances flavor; adjust according to taste.
  • 1/4 teaspoon pepper Adds a subtle kick.
  • 1/4 teaspoon garlic powder Provides depth of flavor without overpowering.
  • 1/4 teaspoon onion powder Complements other flavors beautifully.
Optional Topping
  • 1/4 cup gravy Perfect for those who enjoy a rich finish to their casserole.

Method
 

Preparation
  1. Grease a 9x13 inch baking dish thoroughly to prevent sticking.
  2. In a large bowl, whisk together the eggs, milk, salt, pepper, garlic powder, and onion powder until well combined.
  3. Layer the torn croissants in the greased dish, followed by a generous sprinkling of cheese and any meat you’re using.
  4. Pour the prepared egg mixture over the croissants, ensuring everything is evenly coated.
  5. Cover the dish with plastic wrap and refrigerate overnight.
Baking
  1. Preheat your oven to 350°F (175°C).
  2. Remove the casserole from the fridge, uncover it, and bake for 30-35 minutes or until the egg is set and the top is golden brown.
  3. Drizzle with gravy if desired and serve warm.

Notes

Serve with fresh fruit or a light salad to balance the meal. Store leftovers in an airtight container in the refrigerator for up to 3 days. You can freeze the casserole before baking for up to 3 months.