Christmas Morning Breakfast Casserole

This make-ahead breakfast casserole is the perfect solution for busy Christmas mornings. Prepare it the night before and simply bake it while you open presents. Savory sausage, eggs, cheese, and vegetables combine for a hearty, festive meal without the rush.

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Course: Breakfast, Brunch

Cuisine: American, Holiday

Keyword: Breakfast Casserole, Christmas Breakfast, Make Ahead Breakfast, Holiday Breakfast, Egg Casserole

Prep Time: 20

Cook Time: 50

Overnight Rest: 8

Total Time: 9

Servings: servings

Calories: 385kcal

Equipment

9x13 inch Baking Dish
Large Skillet
Mixing Bowl
Whisk
Spatula

Ingredients

Main Ingredients

1 pound breakfast sausage sage-flavored recommended
6 large eggs farm-fresh if possible
2 cups whole milk or half-and-half for extra richness
1 teaspoon dry mustard powder
1 teaspoon salt kosher preferred
freshly ground black pepper to taste
6 slices day-old bread cubed, sourdough recommended
2 cups sharp cheddar cheese shredded, divided (reserve 1/4 cup for topping)
1/2 cup red bell pepper diced
1/4 cup green onions chopped
1/2 teaspoon nutmeg optional
butter for greasing dish

Instructions

Brown the sausage in a large skillet over medium heat, breaking it into small crumbles as it cooks (8-10 minutes) until no pink remains. Drain excess fat on paper towels.
In a large bowl, whisk together eggs, milk, dry mustard, salt, pepper, and optional nutmeg until well combined and slightly frothy.
Grease a 9x13-inch baking dish with butter. Layer the bread cubes evenly across the bottom, followed by the cooked sausage, diced red peppers and green onions. Sprinkle with most of the cheese, reserving about 1/4 cup for topping later.
Pour the egg mixture slowly and evenly over the assembled ingredients. Gently press down with a spatula to ensure all bread pieces are moistened. Cover tightly with plastic wrap and refrigerate overnight (or at least 8 hours).
When ready to bake, remove the casserole from the refrigerator and let it stand at room temperature for 30 minutes. Preheat your oven to 350°F (175°C).
Sprinkle the reserved cheese on top and bake uncovered for 45-50 minutes until puffed, golden brown, and set in the center. A knife inserted in the center should come out clean.
Let rest for 10-15 minutes before cutting into portions and serving.

Notes

For a lighter version, try using turkey sausage, whole grain bread, and reducing the cheese by 1/3. You can also add extra vegetables like spinach or mushrooms for more nutrients.

Make sure to use day-old or slightly stale bread for best texture, as fresh bread can result in a soggy casserole.

Leftovers can be refrigerated for up to 3 days or frozen in individual portions for up to 2 months.

Nutrition

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