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Ultimate Make-Ahead Christmas Breakfast Casserole

Close-up of a thick slice of Christmas breakfast casserole featuring layers of egg, sausage crumbles, and melted cheddar cheese.
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Prepare this hearty, savory egg and sausage strata the night before for a stress-free Christmas morning brunch that feeds a crowd.

Ingredients

Scale
  • 1 pound pork sausage, cooked and drained
  • 1 loaf (about 1 pound) sourdough bread, cut into 1-inch cubes
  • 1 cup shredded Gruyère cheese
  • 1 cup shredded sharp Cheddar cheese
  • 12 large eggs
  • 2 cups whole milk
  • 1 cup heavy cream
  • 1 teaspoon Dijon mustard
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1/4 teaspoon nutmeg

Instructions

  1. Lightly grease a 9×13 inch baking dish.
  2. Spread half of the sourdough bread cubes evenly in the prepared dish.
  3. Sprinkle the cooked sausage and half of the Gruyère and Cheddar cheese over the bread layer.
  4. Top with the remaining bread cubes, then sprinkle with the remaining cheese.
  5. In a large bowl, whisk together the eggs, milk, heavy cream, Dijon mustard, salt, pepper, and nutmeg until well combined. This creates your rich custard base.
  6. Slowly pour the egg mixture evenly over the bread and cheese layers in the baking dish. Gently press down on the bread to help it soak up the liquid.
  7. Cover the dish tightly with plastic wrap. Refrigerate for at least 8 hours, or preferably overnight. This is the key to your stress-free Christmas Morning Breakfast.
  8. When ready to bake, preheat your oven to 350 degrees Fahrenheit. Remove the plastic wrap from the casserole.
  9. Bake uncovered for 50 to 60 minutes, or until the casserole is puffed, golden brown on top, and a knife inserted near the center comes out clean.
  10. Let the casserole rest for 10 minutes before slicing and serving your Easy Holiday Brunch Recipe.

Notes

  • For a Martha Stewart Inspired Breakfast feel, use high-quality sourdough bread.
  • If you need to speed up the process, you can bake this casserole after only 30 minutes of soaking time, but the texture will be less uniform.
  • This recipe is excellent for feeding a crowd; it easily serves 10 to 12 people.

Nutrition

Find it online: https://magazinemeal.com/christmas-breakfast-casserole-recipe/