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Make-Ahead Sausage and Hash Brown Christmas Breakfast Casserole

A close-up of a hearty slice of christmas breakfast casserole with sausage and melted cheddar cheese.

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Prepare this hearty sausage, egg, and cheese casserole the night before for a stress-free Christmas morning. Bake it fresh for a warm, comforting holiday brunch that feeds a crowd.

Ingredients

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  • 1 pound breakfast sausage, cooked and drained
  • 1 (30 ounce) package frozen shredded hash browns, thawed
  • 1 1/2 cups shredded sharp cheddar cheese
  • 1 cup shredded Monterey Jack cheese
  • 12 large eggs
  • 2 cups milk
  • 1 teaspoon dry mustard powder
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper

Instructions

  1. Grease a 9×13 inch baking dish.
  2. Spread the thawed hash browns evenly over the bottom of the prepared dish.
  3. Sprinkle the cooked sausage over the hash browns.
  4. Distribute the cheddar and Monterey Jack cheese evenly over the sausage layer.
  5. In a large bowl, whisk together the eggs, milk, dry mustard, salt, and pepper until well combined.
  6. Pour the egg mixture slowly and evenly over the layers in the baking dish.
  7. Cover the dish tightly with plastic wrap. Refrigerate for at least 4 hours, or preferably overnight.
  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 set in the center and lightly golden brown.
  10. Let the casserole rest for 10 minutes before slicing and serving.

Notes

  • For a make-ahead option, assemble the entire casserole the night before and keep it covered in the refrigerator.
  • If baking directly from the refrigerator, you may need to add 5 to 10 minutes to the total bake time.
  • You can substitute ham or bacon for the sausage if you prefer a different meat.
  • This recipe serves 8 to 10 people, making it ideal for holiday gatherings.

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