Martha Stewart Christmas Breakfast Casserole Recipe

If you are on the hunt for a festive, comforting dish that transforms your holiday morning into a memorable feast, the Martha Stewart Christmas Breakfast Casserole Recipe is your new go-to. Packed with savory sausage, layers of tangy Gruyère and Parmesan cheeses, and overnight-soaked sourdough bread, this casserole comes together with simple ingredients yet offers extraordinary flavor and texture. It blends the richness of eggs and cream with a subtle kick from Dijon mustard and nutmeg, making it a perfect centerpiece for your Christmas breakfast table that your family and friends will rave about year after year.

Ingredients You’ll Need

Every element of the Martha Stewart Christmas Breakfast Casserole Recipe plays an essential role, from the savory sausage providing meaty depth to the creamy custard that holds everything together for a luscious finish. These straightforward ingredients come together to create a symphony of flavors and textures that are well worth the effort.

• 1 lb pork breakfast sausage: Choose high-quality sausage for a juicy, flavorful base that browns beautifully.
• 1 large yellow onion, chopped: Adds sweetness and aromatic depth when browned with the sausage.
• 1 (1-pound) loaf of sourdough bread, cut into 1-inch cubes: Provides hearty texture and tangy flavor; make sure it’s slightly stale for best absorption.
• 2 cups shredded Gruyère cheese: Melts into creamy pockets with a nutty, rich taste.
• 1/2 cup grated Parmesan cheese: Adds a sharp, savory kick that complements the Gruyère perfectly.
• 8 large eggs: The foundation of the custard that binds the casserole together.
• 2 cups whole milk: Balances the custard with tender creaminess.
• 1 cup heavy cream: Boosts richness and ensures a silky custard texture.
• 1 tbsp Dijon mustard: Lends a subtle tang and brightness that elevates the overall flavor.
• 1 tsp salt: Essential for seasoning throughout.
• 1/2 tsp black pepper: Adds a gentle, warm bite.
• 1/4 tsp ground nutmeg: A classic warming spice that pairs beautifully with the cream and cheese.

How to Make Martha Stewart Christmas Breakfast Casserole Recipe

Step 1: Brown the Sausage and Onion

Start by cooking the pork breakfast sausage and chopped yellow onion in a skillet over medium heat. Cook until the sausage is browned and the onion becomes translucent and soft. This mixture develops deep savory flavor, so be sure to drain the excess grease to avoid greasiness in your casserole.

Step 2: Combine the Bread and Cheese

In a large bowl, toss together the sourdough bread cubes, the cooked sausage and onion, along with the shredded Gruyère and grated Parmesan cheeses. This combination forms the hearty base of your casserole, mingling fluffy bread with melty, flavorful cheese and savory meat.

Step 3: Prepare the Custard Mixture

Using the same bowl to keep things simple, whisk together the eggs, whole milk, heavy cream, Dijon mustard, salt, black pepper, and ground nutmeg until smooth. This rich custard will soak into the bread mixture, creating a luscious, custardy texture after baking that’s utterly irresistible.

Step 4: Assemble and Refrigerate Overnight

Transfer the bread and sausage mixture to a well-greased 9×13-inch baking dish. Pour the custard evenly over the top, making sure every cube of bread can soak up the delicious custard. Cover the dish with plastic wrap or foil, then refrigerate for at least 8 hours or overnight. This step is a game changer, as it allows the flavors to meld beautifully and the bread to fully absorb the custard.

Step 5: Prepare to Bake

When you are ready to bake, preheat your oven to 350°F (175°C). Remove the casserole from the refrigerator and let it sit at room temperature for about 30 minutes. This helps it bake evenly and ensures the center sets perfectly without drying out.

Step 6: Bake Until Golden and Set

Place the uncovered casserole in the oven and bake for 50 to 60 minutes until the top is golden brown and the custard is firm to the touch. Once baked, allow it to rest for about 10 minutes before serving to let the flavors settle and make slicing easier.

How to Serve Martha Stewart Christmas Breakfast Casserole Recipe

Garnishes

A sprinkle of fresh chopped parsley or chives on top adds a pop of color and fresh herbal brightness that cuts through the rich, cheesy goodness. If you like a little zip, a dollop of sour cream or a drizzle of hot sauce can also be wonderful accompaniments.

Side Dishes

This casserole pairs beautifully with fresh fruit salad for a refreshing contrast and a cup of hot coffee or a mimosa to make your Christmas morning feel truly celebratory. You can also serve it with crispy roasted breakfast potatoes or a light green salad for extra texture and balance.

Creative Ways to Present

For a festive touch, serve the casserole in a beautiful ceramic baking dish garnished with seasonal herbs like rosemary or thyme sprigs. You can also portion it into individual ramekins for a charming and elegant presentation that makes everyone feel special at the table.

Make Ahead and Storage

Storing Leftovers

Place any leftover casserole in an airtight container and store in the refrigerator. It keeps well for up to 3 days while maintaining its delightful flavors and texture. Reheat gently to avoid drying it out.

Freezing

This casserole freezes wonderfully. Wrap portions tightly in plastic wrap and aluminum foil or place in freezer-safe containers for up to 2 months. To enjoy later, thaw overnight in the refrigerator before reheating.

Reheating

Reheat the casserole slices in a preheated 350°F oven for about 15-20 minutes until warmed through, or microwave individual portions on medium power until hot, taking care to maintain the creamy custard texture without overcooking.

FAQs

Can I use a different type of bread for the casserole?

Yes, while sourdough lends wonderful flavor and texture, you can substitute with French bread, challah, or even brioche for a slightly sweeter, tender bite. Just make sure the bread is slightly stale to absorb the custard properly.

Is it possible to make this casserole vegetarian?

Absolutely! Swap the pork sausage for a plant-based sausage or sautéed mushrooms and bell peppers for a hearty, flavorful vegetarian version that still delivers plenty of coziness and satisfaction.

What can I prep the night before besides refrigerating the assembled casserole?

You can chop the onions and grate the cheeses in advance to save time on busy mornings. Just keep them stored separately in the fridge to keep everything fresh until you’re ready to assemble.

How do I make sure the casserole isn’t soggy after baking?

Draining the cooked sausage well and ensuring the bread cubes are slightly stale helps prevent sogginess. Also, letting the casserole rest after baking allows excess moisture to evaporate and the custard to set properly.

Can I double the recipe for a larger crowd?

Definitely! Just use a larger baking dish or two standard dishes. Keep an eye on baking time as it might increase slightly with a deeper casserole, and consider adjusting your refrigerator space to accommodate the larger assembled dish.

Final Thoughts

The Martha Stewart Christmas Breakfast Casserole Recipe wonderfully captures the spirit of holiday mornings — warm, inviting, and full of flavor that brings loved ones together. I truly hope you give this recipe a try and make it a new holiday tradition, savoring every bite with joy and laughter around your breakfast table.

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