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Overnight Sausage Breakfast Casserole

A make-ahead casserole of sausage, bread cubes, cheddar, and egg custard that bakes up golden and puffy on Christmas morning.
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Prep Time 20 minutes
Cook Time 50 minutes
Servings: 8
Course: Breakfast
Cuisine: American
Calories: 420
Ingredients Equipment Method Notes

Ingredients
  

  • 1 pound breakfast sausage
  • 6 cups day-old bread cut into 1-inch cubes
  • 2 cups shredded sharp cheddar cheese divided
  • 8 large eggs
  • 2 cups whole milk
  • 1 teaspoon salt
  • 1 teaspoon dry mustard powder
  • ½ teaspoon black pepper

Equipment

  • 9x13-inch baking dish
  • Large skillet
  • Large mixing bowl and whisk
  • Plastic wrap or foil

Method
 

  1. Step 1: Cook and drain the sausage and grease a 9x13-inch dish.
  2. Step 2: Layer the bread, sausage, and half the cheese in the dish.
  3. Step 3: Whisk the eggs, milk, and seasonings and pour over the bread.
  4. Step 4: Cover and refrigerate overnight.
  5. Tip: Chill at least 8 hours.
  6. Step 5: Top with the remaining cheese and green onions and bake at 350°F for 45 to 55 minutes.
  7. Tip: Cover with foil if it browns too fast.
  8. Step 6: Rest 10 minutes before slicing.

Notes

Calories are an estimate per serving.
The casserole is done when it reaches 160°F in the center.