Start your Christmas morning with a delightful and hearty breakfast sausage casserole. This dish combines savory breakfast sausage, fluffy eggs, and gooey cheddar cheese layered over bread cubes and baked to perfection. It's an easy and comforting meal that will bring joy to your holiday table.
Most of the ingredients for this recipe are common household items, but you may need to pick up dry mustard if it's not already in your spice rack. Additionally, ensure you have enough shredded cheddar cheese and breakfast sausage on hand, as these are key components of the dish.

Ingredients For Christmas Breakfast Sausage Casserole
Breakfast sausage: Adds a savory and hearty flavor to the casserole.
Eggs: Provides structure and richness to the dish.
Milk: Helps to create a creamy texture in the casserole.
Salt: Enhances the overall flavor of the ingredients.
Dry mustard: Adds a subtle tang and depth of flavor.
Bread cubes: Forms the base layer and adds texture.
Shredded cheddar cheese: Melts into a gooey, delicious topping.
Technique Tip for This Recipe
When preparing this Christmas Breakfast Sausage Casserole, ensure that the bread cubes are slightly stale or toasted. This helps them absorb the egg mixture better, resulting in a more cohesive and flavorful casserole. Additionally, for an extra layer of flavor, consider browning the sausage with a bit of onion and garlic before adding it to the baking dish.
Suggested Side Dishes
Alternative Ingredients
cooked and crumbled breakfast sausage - Substitute with ground turkey: Ground turkey is a leaner option and can be seasoned to mimic the flavors of breakfast sausage.
cooked and crumbled breakfast sausage - Substitute with vegetarian sausage: Vegetarian sausage provides a plant-based alternative while maintaining the texture and flavor profile.
beaten eggs - Substitute with egg substitute: Egg substitutes are ideal for those with dietary restrictions or allergies and can replicate the binding properties of eggs.
milk - Substitute with almond milk: Almond milk is a dairy-free alternative that works well in casseroles, providing a similar consistency.
milk - Substitute with oat milk: Oat milk offers a creamy texture and is suitable for those avoiding dairy.
salt - Substitute with soy sauce: Soy sauce can add a savory depth of flavor while also providing the necessary saltiness.
dry mustard - Substitute with Dijon mustard: Dijon mustard can be used to add a similar tangy flavor, though it may slightly alter the texture.
cubed bread - Substitute with gluten-free bread: Gluten-free bread is perfect for those with gluten sensitivities and will still absorb the liquid mixture well.
cubed bread - Substitute with hash browns: Hash browns can be used for a different texture and flavor, providing a potato base instead of bread.
shredded cheddar cheese - Substitute with shredded mozzarella cheese: Mozzarella cheese offers a milder flavor and melts well, making it a good alternative.
shredded cheddar cheese - Substitute with vegan cheese: Vegan cheese is a dairy-free option that can mimic the melting properties of cheddar cheese.
Other Alternative Recipes Similar to This Dish
How to Store / Freeze This Recipe
Allow the casserole to cool completely before storing. This helps prevent condensation, which can make the bread soggy.
For short-term storage, cover the baking dish tightly with plastic wrap or aluminum foil. Alternatively, transfer individual portions to airtight containers. Store in the refrigerator for up to 3-4 days.
For long-term storage, cut the casserole into individual servings and wrap each piece tightly in plastic wrap. Then, place the wrapped pieces in a freezer-safe bag or container. Label with the date and freeze for up to 2 months.
To reheat from the refrigerator, preheat your oven to 350°F (175°C). Place the casserole in an oven-safe dish and cover with aluminum foil. Heat for 20-25 minutes or until warmed through. For a quicker option, microwave individual portions on medium power for 2-3 minutes.
To reheat from frozen, it's best to thaw the casserole in the refrigerator overnight. Once thawed, follow the same reheating instructions as for refrigerated casserole. If you're in a hurry, you can reheat directly from frozen by baking at 350°F (175°C) for 45-60 minutes, covered with aluminum foil, until heated through.
For an extra touch of freshness, consider adding a sprinkle of freshly shredded cheddar cheese or a handful of chopped herbs like parsley or chives before reheating. This will enhance the flavor and presentation of your casserole.
Avoid reheating the casserole multiple times, as this can affect the texture and flavor. Only reheat the portion you plan to eat to maintain the best quality.
How to Reheat Leftovers
Preheat your oven to 350°F (175°C). Place the leftover Christmas breakfast sausage casserole in an oven-safe dish, cover it with aluminum foil to prevent it from drying out, and bake for about 20-25 minutes or until heated through.
For a quicker option, use the microwave. Place a portion of the casserole on a microwave-safe plate, cover it with a microwave-safe lid or another plate to retain moisture, and heat on medium power for 2-3 minutes. Check and stir halfway through to ensure even heating.
If you prefer a crispy top, use a toaster oven. Preheat the toaster oven to 350°F (175°C), place the casserole in an oven-safe dish, and heat for about 15-20 minutes. You can remove the foil for the last 5 minutes to achieve a golden, crispy top.
For stovetop reheating, use a non-stick skillet over medium-low heat. Add a small amount of butter or olive oil to the skillet, place the casserole in the pan, and cover with a lid. Heat for about 10 minutes, stirring occasionally to ensure even warming.
If you have an air fryer, preheat it to 350°F (175°C). Place the casserole in an air fryer-safe dish or on a piece of parchment paper, and heat for about 10-15 minutes, checking halfway through to ensure it doesn't overcook.
Best Tools for This Recipe
Oven: Used to bake the casserole at a consistent temperature of 350°F (175°C).
Mixing bowl: Utilized to whisk together the eggs, milk, salt, and dry mustard.
Whisk: Essential for blending the egg mixture smoothly.
9x13 inch baking dish: The main vessel for layering the bread cubes, sausage, and cheese, and for baking the casserole.
Cooking spray: Used to grease the baking dish to prevent sticking.
Measuring cups: Necessary for accurately measuring the milk and shredded cheese.
Measuring spoons: Used to measure the salt and dry mustard precisely.
Knife: Needed for cubing the bread slices.
Cutting board: Provides a safe surface for cutting the bread.
Spatula: Handy for spreading the layers evenly in the baking dish.
Timer: Ensures the casserole is baked for the correct amount of time.
Cooling rack: Allows the casserole to cool and set for 10 minutes before serving.
How to Save Time on Making This Recipe
Prepare ingredients ahead: Cook and crumble the breakfast sausage the night before. Store it in the fridge to save time in the morning.
Use pre-shredded cheese: Opt for pre-shredded cheddar cheese to cut down on prep time.
Pre-cube the bread: Cube the bread slices in advance and store them in an airtight container.
Mix egg mixture in advance: Whisk together the eggs, milk, salt, and dry mustard the night before and refrigerate.
Assemble the night before: Layer the bread cubes, sausage, and cheese in the baking dish, then pour the egg mixture over it. Cover and refrigerate overnight.

Christmas Breakfast Sausage Casserole
Ingredients
Main Ingredients
- 1 pound breakfast sausage cooked and crumbled
- 6 eggs beaten
- 2 cups milk
- 1 teaspoon salt
- 1 teaspoon dry mustard
- 6 slices bread cubed
- 2 cups cheddar cheese shredded
Instructions
- Preheat oven to 350°F (175°C).
- In a medium mixing bowl, whisk together eggs, milk, salt, and dry mustard.
- In a greased 9x13 inch baking dish, layer the bread cubes, cooked sausage, and shredded cheese.
- Pour the egg mixture evenly over the layers in the baking dish.
- Bake in preheated oven for 45 minutes, or until the top is golden and the casserole is set.
- Let stand for 10 minutes before serving.
Nutritional Value
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