Christmas Morning Breakfast Casserole with Beef Sausage

Christmas Morning Breakfast Casserole

The sound of beef sausage sizzling in a pan is the best way to start the holiday. You don't need to peel and chop fresh potatoes for this, because thawed frozen cubes actually hold the custard better and cook more evenly.

This easy Christmas morning breakfast casserole is built for people who want a fancy result on a budget. It uses a few pantry staples to create a heavy hitter that feeds a crowd.

You'll get a Christmas morning breakfast casserole with sausage and hash browns that tastes like it came from a brunch spot. It's designed to be prepped the night before so you can actually enjoy your coffee.

Recipe Specs

This recipe is a budget-friendly powerhouse. It relies on a long soak to ensure the textures are right.

• Prep time: 15 minutes
• Cook time: 70 minutes
• Total time: 9 hours 35 mins
• Yield: 12 squares

Gathering Your Essentials

I prefer using sharp cheddar here to balance the richness of the eggs. If you're watching your spending, store-brand frozen hash browns work just as well as the expensive brands.

• 1 lb ground beef breakfast sausage Why this? Acts as the main savory protein base
• 2 cups shredded sharp cheddar cheese
• 3 cups frozen cubed hash browns, thawed
• 1 small yellow onion, finely diced
• 1 bell pepper, diced
• 12 large eggs
• 2 cups whole milk
• 1/2 tsp salt
• 1/2 tsp black pepper
• 1/4 tsp smoked paprika
• 1/4 tsp garlic powder

Equipment Needed

You only need basic gear for this. A sturdy skillet for the meat and a standard baking pan do the trick.

• 9x13 inch baking dish
• Large skillet
• Large mixing bowl
• Whisk
• Meat thermometer

From Prep to Plate

Phase 1: Searing and Sautéing

Cook 1 lb of ground beef breakfast sausage over medium-high heat in a pan until no longer pink. Stir in the finely diced yellow onion and diced bell pepper. Sauté for 4-5 minutes until the sausage reaches a mahogany color and the vegetables are translucent.

Drain any excess grease and let the mixture cool slightly.

Phase 2: Building the Foundation

Set the oven to 350°F (180°C) and grease a 9x13 inch baking dish. Distribute the 3 cups of thawed cubed hash browns evenly across the bottom. Layer the cooked sausage and vegetable mix over the potatoes, then sprinkle 2 cups of shredded sharp cheddar cheese evenly on top.

Phase 3: The Custard Soak

In a large bowl, whisk together 12 large eggs, 2 cups whole milk, 1/2 tsp salt, 1/2 tsp black pepper, 1/4 tsp smoked paprika, and 1/4 tsp garlic powder until frothy and well-combined. Slowly pour the egg custard over the layers in the baking dish.

Note: To prepare this Christmas morning breakfast casserole in advance, cover the dish and refrigerate for 8 to 12 hours. This allows the starch to saturate.

Phase 4: The Holiday Bake

Place the dish on the center rack of the oven. Bake for 60-70 minutes until the center is set and the edges are bubbling. Use a thermometer to verify the internal temperature reaches 165°F (74°C). Let the casserole rest for 10 minutes to let the custard firm up before slicing into 12 squares.

Why the Steps Matter

The way this dish comes together depends on a few simple physical reactions.

• The Overnight Soak: This allows the frozen potato starch to fully absorb the liquid, which helps prevent the bottom from staying raw or watery.
• Sausage Browning: Cooking the meat first creates deep flavor through browning, which you won't get if you just mix raw meat into the eggs.

Avoiding Kitchen Disasters

If the center feels too soft, it's usually because the dish didn't reach the safe temperature. Give it another 5-10 minutes.

Sogginess in the Middle

This happens if potatoes aren't thawed or the oven is too cool. Ensure your hash browns are fully thawed before layering.

Preventing Burnt Cheese

If the top browns too fast, the oven might be running hot. Cover the top loosely with foil after 40 minutes.

Checking Egg Doneness

Avoid the "jiggle test" alone. A thermometer is the only way to be sure the eggs hit 165°F (74°C).

Storage and Reheating

Keep leftovers in a sealed tub for up to 4 days in the fridge. This Christmas Morning Breakfast Casserole also freezes well. Wrap individual squares in foil and store in the freezer for 3 months.

To reheat, avoid the microwave so the eggs don't turn rubbery. Use an oven at 300°F (150°C) for 10-15 minutes, until a thermometer reads 165°F (74°C) in the center.

An air fryer at 320°F (160°C) for 5 minutes, until the center reaches 165°F (74°C), is a great hack to get those edges crispy again.

Customizing Your Bake

Feel free to change the base to switch things up. Substitute frozen tater tots for cubed potatoes for a different twist, or press a layer of refrigerated dough on top before baking if you want a biscuit-style Christmas morning breakfast casserole.

For a sweeter holiday morning treat, leave out the peppers and sausage, and swap the cheddar cheese for feta and some fresh blueberries. If you prefer a crock pot version, set your slow cooker to low for 6-8 hours, omitting the potato browning step.

If you enjoy comforting oven bakes, this dish pairs perfectly with a Broccoli Casserole recipe on the side.

Serving Your Casserole

Cut this Christmas Morning Breakfast Casserole into 12 warm squares. To bring a little brightness to the flavor, I recommend topping each serving with a drizzle of hot sauce or a scoop of sour cream.

Serve this alongside a simple orange salad or a bowl of fresh berries. This meal is filling enough that you won't need any other sides on the table.