Name: Martha Stewart Christmas Breakfast Casserole to Wow Your Guests
Prep time: 30 min
Cook time: 50 min
Total time: 110 min
Ingredients: 1 lb Pork Breakfast Sausage (Can substitute with turkey sausage.); 1 medium Yellow Onion (Shallots can be used for a milder touch.); 10 slices Sourdough Bread (Use day-old bread for the best texture.); 2 cups Gruyère Cheese (Swiss cheese can be used as a substitute.); 1 cup Parmesan Cheese (Pecorino Romano can be used as an alternative.); 8 large Large Eggs (Ensure they are fresh for the best results.); 2 cups Whole Milk (Half-and-half works for a richer taste.); 1 cup Heavy Cream (Can replace with additional milk for a lighter option.); 2 tbsp Dijon Mustard (Yellow mustard can be used in a pinch.); 1 tsp Salt (Adjust according to taste.); 1 tsp Black Pepper (Adjust according to taste.); 1/4 tsp Ground Nutmeg (Adjust according to taste.); 2 tbsp Fresh Herbs (e.g., Chives, Parsley) (Sprinkle on top just before serving.); 1 cup Additional Cheese (More Gruyère or cheddar can be used.)

As I opened the fridge on a chilly December morning, a delightful aroma of baked goodness wafted through the air, reminding me of the joy and warmth Christmas brings. Enter Martha Stewart’s Christmas Breakfast Casserole—a festive masterpiece that layers sourdough bread, savory pork sausage, and nutty Gruyère cheese, all nestled in a creamy egg custard. This dish is not only a crowd-pleaser but also incredibly easy to prepare in advance, adding a touch of convenience to your holiday celebrations. With enough servings to delight your family and friends, it transforms Christmas morning into a stress-free feast. Who can resist the creamy, golden euphoria of this casserole? Let’s dive in and create a morning that everyone will remember!

Why is this casserole a holiday favorite?

Ease of Preparation: You can assemble this casserole the night before, allowing you to enjoy cozy Christmas morning moments without the hassle of cooking!

Decadent Layers: The savory pork sausage, creamy Gruyère, and the heartiness of sourdough create a flavor explosion that pleases every palate.

Perfect for a Crowd: Serving 8-10 people, it’s an ideal dish for festive gatherings, making it a stress-free choice for brunch with loved ones.

Versatile Options: Not a pork lover? Substitute with turkey sausage or even bacon. Want to sneak in some greens? Spinach or roasted peppers fit right in!

Hearty Comfort: The savory custard and creamy texture of the casserole are sure to keep everyone warm and satisfied. Just like my Peach Baked Oatmeal, this dish celebrates comfort food at its finest!

Endless Pairings: Elevate your breakfast by serving it alongside a refreshing winter fruit salad or festive mimosas for the ultimate brunch experience.

Martha Stewart Christmas Breakfast Casserole Ingredients

For the Casserole
• Pork Breakfast Sausage – Adds savory protein and richness; you can swap it with turkey sausage for a lighter dish.
• Yellow Onion – Brings sweetness and depth of flavor; shallots can be used for a milder touch if desired.
• Sourdough Bread – Provides the hearty base of the casserole; using day-old bread ensures the best texture.
• Gruyère Cheese – Infuses a nutty flavor and creaminess; Swiss cheese can be used if Gruyère isn’t available.
• Parmesan Cheese – Introduces a salty umami flavor; Pecorino Romano is a great alternative if needed.
• Large Eggs – Essential for binding the custard together; ensure they’re fresh for optimal results.
• Whole Milk – Adds creaminess to the custard; half-and-half works for an even richer taste.
• Heavy Cream – Enhances mouthfeel and richness; you can replace it with additional milk if you prefer lighter.
• Dijon Mustard – Contributes a delightful tang; yellow mustard can be used in a pinch.
• Salt, Black Pepper, Ground Nutmeg – Seasonings to elevate the flavor, feel free to adjust them to your taste.
Optional Toppings
• Fresh Herbs (e.g., Chives, Parsley) – For a fresh finish; sprinkle on top just before serving for a burst of color and flavor.
• Additional Cheese – A little more Gruyère or cheddar for an extra cheesy layer; a great way to customize your casserole!

This Martha Stewart Christmas Breakfast Casserole is sure to impress your guests during the festive season!

Step‑by‑Step Instructions for Martha Stewart Christmas Breakfast Casserole

Step 1: Preheat the Oven
Begin by preheating your oven to 350°F (175°C). This critical step ensures that the Martha Stewart Christmas Breakfast Casserole cooks evenly and achieves that golden-brown top we all love. While the oven warms up, you can prepare the remaining ingredients, creating a delightful cooking atmosphere in your kitchen.

Step 2: Cook the Sausage and Onion
In a large skillet over medium heat, add your pork breakfast sausage and diced yellow onion. Cook these for about 8-10 minutes, stirring occasionally until the sausage is browned and the onion is translucent. The savory aroma will fill your kitchen! Once cooked, drain any excess fat to keep the casserole light and delicious.

Step 3: Prepare the Egg Mixture
In a spacious mixing bowl, whisk together the large eggs, whole milk, heavy cream, Dijon mustard, salt, black pepper, and ground nutmeg. Aim for a smooth, well-combined custard, which will bind all the layers of the Martha Stewart Christmas Breakfast Casserole together. This mixture should be creamy and slightly frothy, ready to soak into the bread.

Step 4: Layer the Casserole
Next, take a greased 9×13 inch baking dish and layer the sourdough bread cubes, followed by the cooked sausage and onion mixture. Sprinkle the Gruyère and Parmesan cheese evenly over the layers. This creates a delicious base that will soak up the egg mixture beautifully. Make sure every layer feels filled with flavor and has a nice mixture of textures.

Step 5: Pour the Egg Mixture
Carefully pour the creamy egg mixture over the layered ingredients in the baking dish. Gently press down on the bread cubes with a spatula to ensure all pieces are soaked and absorbed by the custard. This step is vital for achieving that tasty, custardy depth in your Martha Stewart Christmas Breakfast Casserole.

Step 6: Let it Rest
Allow the casserole to sit for at least 30 minutes at room temperature, or refrigerate it overnight for better flavor absorption. This resting period is essential, giving the bread time to absorb the egg mixture, resulting in a richer texture and taste. If you’re short on time, just let it sit while the oven preheats.

Step 7: Bake the Casserole
Once you’re ready, place the casserole in the preheated oven and bake for 45-50 minutes. Look for a golden top that has risen nicely, and a slightly jiggly center—this indicates that it’s perfectly baked. The aroma will be irresistible, filling your home with festive cheer and excitement for your upcoming brunch.

Step 8: Rest Before Serving
After baking, remove the casserole from the oven and let it rest for 10 minutes. This brief cooling period allows the custard to set, making it easier to slice and serve. It’s a wonderful time to prepare any additional garnishes, such as fresh herbs, that will elevate your Martha Stewart Christmas Breakfast Casserole presentation.

Storage Tips for Martha Stewart Christmas Breakfast Casserole

Room Temperature: Allow the casserole to cool completely before storing it at room temperature for up to 2 hours to avoid bacterial growth.

Fridge: Store any leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the microwave or oven until warmed through.

Freezer: If you want to freeze the casserole, wrap individual portions tightly in plastic wrap, then aluminum foil. It can be frozen for up to 2 months for optimal freshness.

Reheating: When ready to enjoy, thaw overnight in the fridge and reheat in the oven at 350°F (175°C) for about 20-25 minutes or until warmed through. Enjoy the deliciousness of your Martha Stewart Christmas Breakfast Casserole!

Make Ahead Options

Perfect for busy holiday mornings, the Martha Stewart Christmas Breakfast Casserole can be prepared up to 24 hours in advance! To prep ahead, simply follow the recipe instructions up to the point of baking, then cover the assembled casserole tightly with plastic wrap and refrigerate it overnight. This allows the flavors to meld beautifully, resulting in a richer taste. When you’re ready to serve, preheat your oven to 350°F (175°C) and bake straight from the fridge—no need to bring it to room temperature! Just make sure to check its doneness around the 50-minute mark, ensuring it’s golden and set. This make-ahead strategy ensures a delicious, festive breakfast with minimal morning effort, leaving you with more time to enjoy your holiday celebrations!

What to Serve with Martha Stewart Christmas Breakfast Casserole

Elevate your festive breakfast spread with delightful side dishes and drinks that create a wholesome Christmas morning experience.

Bright Winter Fruit Salad: A vibrant mix of seasonal fruits adds freshness and balances the richness of the casserole.
Simple Green Salad: Tossed with a light vinaigrette, this salad complements the savory flavors and adds a crisp texture.
Festive Mimosas: Light bubbly drinks made with champagne and orange juice bring a celebratory touch to your brunch.
Creamy Mashed Potatoes: Their velvety smoothness and buttery flavor pair beautifully with the casserole for a hearty meal.
Savory Spinach Quiche: This flaky and delicate quiche introduces another layer of flavor while staying in the holiday spirit.
Hot Cocoa with Whipped Cream: Warm, indulgent chocolate drinks are comforting and sweet, perfect for a cozy breakfast gathering.
Cinnamon Roll Casserole: A sweet option that contrasts with the savory casserole, it offers a delightful alternative for those with a sweet tooth.
Herbed Skillet Potatoes: Crispy and well-seasoned, these potatoes add a delightful crunch, balancing the creamy texture of the dish.

Martha Stewart Christmas Breakfast Casserole Variations

Feel free to put your own spin on this delightful casserole with these creative variations and substitutions that will tantalize your taste buds!

Dairy-Free: Substitute the milk and cream with almond milk or coconut cream for a delicious dairy-free option.
Cheese Swap: Try swapping Gruyère for sharp cheddar or creamy feta to explore different flavor profiles in each bite.
Vegetarian Option: Replace the pork sausage with sautéed mushrooms and bell peppers for a hearty plant-based twist. This keeps the casserole rich and flavorful!
Hot and Spicy: Add diced jalapeños or sprinkle some red pepper flakes to the egg mixture for a delightful kick in every mouthful.
Gluten-Free: Use gluten-free bread instead of sourdough to accommodate dietary needs without sacrificing flavor.
Meat Lovers: Mix in cooked bacon or ham for an extra layer of savory goodness that every meat lover will appreciate.
Herbed Delight: Add chopped fresh herbs like thyme or rosemary to the egg mixture for a fragrant, earthy note that elevates the dish.
Veggie Boost: Toss in fresh spinach or kale for a nutritious punch. The greens will wilt beautifully and add vibrant color to your casserole.

This flavorful holiday dish is as versatile as it is delicious! Don’t forget to pair it with a fresh fruit salad, perhaps something akin to my Peach Baked Oatmeal for a delightful contrast, making your festive brunch truly memorable!

Expert Tips for Martha Stewart Christmas Breakfast Casserole

Soak Time Matters: Letting the casserole sit overnight is essential, allowing the bread to fully absorb the custard for better flavor.
Watch the Bake: Avoid overbaking; check for a golden top and a slightly jiggly center. This ensures a creamy texture rather than a dry one.
Use Day-Old Bread: Opt for day-old sourdough for optimal texture. Fresh bread may become overly mushy after baking.
Customize Wisely: Feel free to swap in different cheeses or protein options, but make sure to keep the balance of flavors intact for the best results.
Add Freshness: Garnish with fresh herbs like chives or parsley just before serving to enhance the dish’s presentation and flavor.

Martha Stewart Christmas Breakfast Casserole Recipe FAQs

How do I select the right sourdough bread for the casserole?
Choosing day-old sourdough bread is ideal for this casserole! It absorbs the custard beautifully without turning mushy. If you can’t find sourdough, you can also try a crusty French bread or a gluten-free option for a different twist.

How should I store leftover casserole?
Absolutely! Once cooled, store any leftovers in an airtight container in the fridge for up to 3 days. If you plan to keep it longer, consider freezing it. Reheating is a breeze—just pop it in the oven or microwave until warmed through!

Can I freeze Martha Stewart’s Christmas Breakfast Casserole?
Yes, you can! To freeze, wrap individual portions tightly in plastic wrap, followed by aluminum foil. This will keep your casserole fresh for up to 2 months. When you’re ready to enjoy, thaw it in the fridge overnight and reheat at 350°F (175°C) for about 20-25 minutes.

What if my casserole ends up dry after baking?
Very! If you find that your casserole is dry, ensure that you’re letting the bread soak well in the custard mixture. Aim for at least 30 minutes of soak time, preferably overnight for ideal texture. Pay close attention while baking; a slightly jiggly center is perfectly okay!

Are there any dietary considerations I should keep in mind?
This casserole includes gluten and dairy, so if you’re cooking for someone with allergies or dietary restrictions, substitutions work wonders! Use gluten-free bread, dairy-free milk, or a vegan sausage alternative to accommodate different needs while still delivering on flavor!

Can I customize the toppings?
Absolutely! Consider garnishing with fresh herbs like chives or parsley just before serving for a burst of color and flavor. You could also add extra cheese, like cheddar, on top for a delightful twist—making this casserole a wonderful canvas for your culinary creativity!