Introduction
Christmas Breakfast Casserole is the ultimate holiday dish that combines savory eggs, melted cheese, and your choice of delicious fillings into one satisfying meal. This festive breakfast bake is perfect for Christmas morning, providing warmth and comfort to start the day on a joyful note. With just one dish to prepare, you can spend more time enjoying the holiday with family and friends. Trust me, this casserole will soon become a cherished tradition at your breakfast table!
Why You’ll Love This Christmas Breakfast Casserole
This Christmas Breakfast Casserole is a crowd-pleaser for several reasons. First, it’s incredibly easy to make, allowing you to prepare it ahead of time, making it a stress-free addition to your holiday menu. Second, this savory Christmas casserole recipe is highly customizable; you can swap out ingredients to suit everyone’s taste. Third, it’s a hearty dish packed with protein from eggs and sausage, making it a filling option for the morning. Additionally, it’s a great way to use up leftover bread and vegetables, minimizing waste. Lastly, it can easily accommodate both meat lovers and vegetarians, thanks to its versatile ingredient list. For these reasons, it truly shines as a perfect holiday breakfast casserole!

Ingredients for Christmas Breakfast Casserole
Gather these items:
- 12 large eggs
- 1 cup milk or half-and-half
- 1 teaspoon salt
- ½ teaspoon black pepper
- 1 teaspoon garlic powder
- 1 teaspoon dried thyme
- 2 cups shredded cheese (cheddar, mozzarella, or a mix)
- 1 cup cooked and crumbled breakfast sausage (or a vegetarian alternative)
- 1 cup diced onions
- 1 cup diced bell peppers (optional)
- 2 cups fresh spinach (or other greens)
- 2 cups cubed bread (preferably day-old or slightly toasted)
- Butter or cooking spray (for greasing the baking dish)
How to Make Christmas Breakfast Casserole Step-by-Step
- Step 1: Cook the sausage in a skillet until browned. Sauté onions, bell peppers, and spinach until softened. Set aside.
- Step 2: In a large bowl, whisk together eggs, milk, salt, pepper, garlic powder, and dried thyme. Stir in the cooked sausage, sautéed vegetables, and cheese.
- Step 3: Grease a 9×13-inch baking dish. Spread the cubed bread evenly over the bottom of the dish. Pour the egg mixture over the bread, ensuring the bread is well-coated.
- Step 4: Cover the dish with plastic wrap and refrigerate overnight to let the bread soak up the egg mixture.
- Step 5: Preheat the oven to 350°F (175°C). Bake uncovered for 45–50 minutes or until the top is golden and the center is set.
Pro Tips for the Perfect Christmas Breakfast Casserole
Keep these in mind:
- Make this casserole ahead of time for a stress-free holiday morning.
- Feel free to customize with your favorite vegetables or meats.
- For a cheesier experience, add more cheese or try different types such as pepper jack for a spicy twist.
- This dish works great as a make-ahead Christmas casserole, allowing flavors to meld overnight.

Best Ways to Serve Christmas Breakfast Casserole
Here are a few ideas to elevate your breakfast experience:
- Serve with freshly squeezed orange juice or hot chocolate for a festive touch.
- Pair it with a light salad or fresh fruit to balance the richness of the casserole.
- Consider offering a variety of hot sauces or condiments for guests to customize their servings.
How to Store and Reheat Christmas Breakfast Casserole
After baking, let the casserole cool completely. Store leftovers in an airtight container in the refrigerator for up to 3 days. To reheat, simply pop it back in the oven at 350°F (175°C) for about 20 minutes or until heated through. This makes it an excellent overnight Christmas casserole that saves time on busy mornings!
Frequently Asked Questions About Christmas Breakfast Casserole
What’s the secret to perfect Christmas Breakfast Casserole?
The secret lies in allowing the bread to soak up the egg mixture overnight. This creates a moist, flavorful base for your casserole. Using day-old or slightly toasted bread helps achieve the best texture!
Can I make Christmas Breakfast Casserole ahead of time?
Absolutely! In fact, preparing it the night before enhances the flavors. Just assemble the casserole, cover it, and refrigerate overnight. Bake it fresh in the morning for a delightful breakfast!
How do I avoid common mistakes with Christmas Breakfast Casserole?
To avoid a soggy casserole, ensure your bread is slightly stale, and don’t skip the refrigeration step. Also, keep an eye on the baking time; overbaking can result in a dry texture.
Variations of Christmas Breakfast Casserole You Can Try
Feel free to experiment with these variations:
- For a vegetarian Christmas breakfast bake, substitute sausage with mushrooms or additional veggies.
- Swap out the bread for croissants or bagels for a different texture and flavor.
- Try adding festive ingredients like cranberries or nuts for a unique twist.
- Consider a cheesy holiday breakfast casserole by mixing in different types of cheese for a richer taste.
For more delicious recipes, check out Lemon Pepper Chicken Thighs or Creamy Italian Meatball Soup. If you’re interested in desserts, don’t miss Salted Caramel Chocolate Chip Cheesecake!
For more information on the nutritional benefits of eggs, you can visit Healthline.
Print
Delicious Christmas Breakfast Casserole for Holiday Mornings
- Total Time: 1 hour
- Yield: 8 servings 1x
- Diet: Vegetarian
Description
Martha Stewart Christmas Breakfast Casserole combines savory eggs, cheese, and your favorite fillings into one simple yet flavorful dish that’s perfect for holiday mornings.
Ingredients
- 12 large eggs
- 1 cup milk or half-and-half
- 1 teaspoon salt
- ½ teaspoon black pepper
- 1 teaspoon garlic powder
- 1 teaspoon dried thyme
- 2 cups shredded cheese (cheddar, mozzarella, or a mix)
- 1 cup cooked and crumbled breakfast sausage (or a vegetarian alternative)
- 1 cup diced onions
- 1 cup diced bell peppers (optional)
- 2 cups fresh spinach (or other greens)
- 2 cups cubed bread (preferably day-old or slightly toasted)
- Butter or cooking spray (for greasing the baking dish)
Instructions
- Cook the sausage in a skillet until browned. Sauté onions, bell peppers, and spinach until softened. Set aside.
- In a large bowl, whisk together eggs, milk, salt, pepper, garlic powder, and dried thyme. Stir in the cooked sausage, sautéed vegetables, and cheese.
- Grease a 9×13-inch baking dish. Spread the cubed bread evenly over the bottom of the dish. Pour the egg mixture over the bread, ensuring the bread is well-coated.
- Cover the dish with plastic wrap and refrigerate overnight to let the bread soak up the egg mixture.
- Preheat the oven to 350°F (175°C). Bake uncovered for 45–50 minutes or until the top is golden and the center is set.
Notes
- Make this casserole ahead of time for a stress-free holiday morning.
- Feel free to customize with your favorite vegetables or meats.
- Prep Time: 15 minutes
- Cook Time: 45-50 minutes
- Category: Breakfast
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 slice
- Calories: 320
- Sugar: 2g
- Sodium: 600mg
- Fat: 20g
- Saturated Fat: 10g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 18g
- Fiber: 2g
- Protein: 18g
- Cholesterol: 300mg
