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Ultimate Make-Ahead Christmas Breakfast Casserole with Sausage and Gruyère

A golden-brown slice of savory christmas breakfast casserole with visible sausage and egg layers on a white plate.
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Prepare this hearty, savory strata the night before for a warm, delicious, and stress-free start to your Christmas morning. This easy holiday breakfast feeds a crowd.

Ingredients

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  • 1 pound bulk pork sausage
  • 1 (10.25 ounce) package frozen hash browns, thawed
  • 1 (10 ounce) loaf sourdough bread, cut into 1-inch cubes
  • 1 cup grated Gruyère cheese
  • 1 cup grated sharp cheddar cheese
  • 6 large eggs
  • 2 cups whole milk
  • 1 teaspoon Dijon mustard
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1/4 teaspoon nutmeg

Instructions

  1. Cook the sausage in a large skillet over medium heat until browned. Drain off excess grease and set aside.
  2. Lightly grease a 9×13 inch baking dish. Spread the thawed hash browns evenly across the bottom of the dish.
  3. Layer the cubed sourdough bread over the hash browns. Sprinkle the cooked sausage and half of the Gruyère and cheddar cheeses over the bread layer.
  4. In a large bowl, whisk together the eggs, milk, Dijon mustard, salt, pepper, and nutmeg until well combined.
  5. Pour the egg mixture evenly over the bread and sausage layers. Gently press down on the bread to help it absorb the liquid.
  6. Sprinkle the remaining half of the cheeses over the top.
  7. Cover the baking dish tightly with plastic wrap. Refrigerate for at least 8 hours, or overnight. This is your make-ahead step for a stress-free Christmas morning.
  8. When ready to bake, preheat your oven to 350 degrees Fahrenheit. Remove the plastic wrap.
  9. Bake uncovered for 45 to 55 minutes, or until the casserole is puffed, golden brown, and a knife inserted near the center comes out clean.
  10. Let the casserole rest for 10 minutes before slicing and serving this easy crowd pleaser breakfast.

Notes

  • If you need to bake this immediately, let the assembled casserole sit at room temperature for 30 minutes before placing it in the preheated oven. Baking time may be slightly shorter.
  • You can substitute the sausage with cooked bacon or ham for a different savory breakfast bake flavor.
  • For a crispier top, you can sprinkle 1/4 cup of panko breadcrumbs over the cheese layer before baking.

Nutrition

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