Christmas Breakfast Casserole Recipe
Introduction
This Christmas Breakfast Casserole is a delightful and hearty way to start your holiday morning. Combining savory sausage, fresh vegetables, and melted cheddar cheese, it’s easy to prepare ahead and perfect for feeding a crowd.

Ingredients
- 1 pound breakfast sausage
- 10 large eggs
- 2 cups whole milk
- 6 slices white bread, cubed
- 2 cups shredded cheddar cheese
- 1 green bell pepper, chopped
- 1 red bell pepper, chopped
- 1 small onion, diced
- 1 tsp salt
- ½ tsp black pepper
Instructions
- Step 1: Cook the sausage in a skillet over medium heat until browned and crumbly.
- Step 2: Add the chopped onions and bell peppers to the skillet and sauté lightly until softened.
- Step 3: Grease a large baking dish and spread the cubed bread evenly across the bottom.
- Step 4: Layer the cooked sausage and sautéed vegetables over the bread cubes.
- Step 5: Sprinkle the shredded cheddar cheese evenly on top of the sausage and vegetables.
- Step 6: In a mixing bowl, whisk together the eggs, milk, salt, and black pepper until combined.
- Step 7: Pour the egg mixture evenly over the layered casserole.
- Step 8: Cover the dish and refrigerate overnight if desired, to let flavors meld.
- Step 9: In the morning, preheat the oven to 350 degrees Fahrenheit (175°C).
- Step 10: Bake the casserole for 45 minutes, or until it’s golden on top and set in the center.
Tips & Variations
- For a vegetarian version, substitute the sausage with sautéed mushrooms or a plant-based sausage alternative.
- Use whole wheat or sourdough bread instead of white bread for added texture and flavor.
- Add a pinch of smoked paprika or cayenne pepper to the egg mixture for a subtle smoky or spicy kick.
- Make individual portions by assembling in muffin tins for easy serving.
Storage
Store any leftover casserole covered in the refrigerator for up to 3 days. To reheat, warm individual portions in the microwave for 1 to 2 minutes or in a preheated oven at 350 degrees Fahrenheit until heated through.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I prepare this casserole entirely the night before?
Yes, assembling it the night before and refrigerating allows the bread to soak up the egg mixture, enhancing the flavor and texture. Just make sure to add the cheese on top before baking.
Can I freeze this casserole?
Yes, you can freeze the unbaked casserole after assembling it. Cover tightly with foil and freeze for up to 1 month. Thaw overnight in the refrigerator before baking as directed.
PrintChristmas Breakfast Casserole Recipe
This Christmas Breakfast Casserole is a hearty, savory dish perfect for holiday mornings. It combines flavorful breakfast sausage, sautéed bell peppers and onions, cubed white bread, shredded cheddar cheese, and a rich egg and milk custard. Prepared ahead and baked until golden, this casserole offers a delicious and comforting way to start your festive day.
- Prep Time: 20 minutes
- Cook Time: 45 minutes
- Total Time: 1 hour 5 minutes (plus optional overnight refrigeration)
- Yield: 8 servings 1x
- Category: Breakfast
- Method: Baking
- Cuisine: American
Ingredients
Sausage and Vegetables
- 1 pound breakfast sausage
- 1 small onion, diced
- 1 green bell pepper, chopped
- 1 red bell pepper, chopped
Bread and Cheese
- 6 slices white bread, cubed
- 2 cups shredded cheddar cheese
Egg Mixture
- 10 large eggs
- 2 cups whole milk
- 1 teaspoon salt
- ½ teaspoon black pepper
Instructions
- Cook the sausage: In a skillet over medium heat, cook the breakfast sausage until browned and crumbly, about 6-8 minutes. Drain excess fat if necessary.
- Sauté vegetables: Add the diced onion, chopped green bell pepper, and chopped red bell pepper to the skillet with the sausage. Sauté lightly until the vegetables are tender, approximately 3-4 minutes.
- Prepare the baking dish: Grease a large baking dish with butter or cooking spray. Evenly layer the cubed white bread on the bottom of the dish.
- Add sausage and vegetables: Spread the cooked sausage and sautéed vegetables evenly over the bread layer.
- Top with cheese: Sprinkle the shredded cheddar cheese evenly across the top of the sausage and vegetable layer.
- Mix egg custard: In a large mixing bowl, whisk together the eggs, whole milk, salt, and black pepper until well combined and smooth.
- Combine and soak: Pour the egg mixture evenly over the casserole layers, making sure the bread soaks up the custard thoroughly.
- Refrigerate (optional): Cover the baking dish with plastic wrap or foil and refrigerate overnight if desired, allowing flavors to meld and bread to absorb the custard.
- Preheat oven: When ready to bake, preheat the oven to 350°F (175°C).
- Bake the casserole: Uncover the casserole and bake in the preheated oven for 45 minutes, or until the top is golden brown and the center is set.
Notes
- For a vegetarian version, substitute the sausage with a plant-based sausage alternative or omit it and add extra vegetables.
- Feel free to use whole wheat or gluten-free bread if desired.
- This casserole can be assembled the night before and refrigerated for convenience on busy mornings.
- Ensure the casserole is thoroughly cooked and set before serving to avoid any runny eggs.
- Leftovers store well in the refrigerator for up to 3 days and can be reheated in the oven or microwave.
Keywords: Christmas breakfast, breakfast casserole, sausage casserole, holiday breakfast, savory casserole, egg casserole, easy breakfast recipe

