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Ultimate Make-Ahead Christmas Breakfast Casserole with Sausage and Hash Browns

A hearty slice of christmas breakfast casserole featuring layers of hash browns, sausage, and melted cheddar cheese.

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Prepare this hearty sausage, egg, and cheese casserole the night before Christmas for an easy, stress-free holiday morning meal that feeds a crowd.

Ingredients

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  • 1 pound breakfast sausage, browned and drained
  • 1 (32 ounce) package frozen hash brown potatoes, thawed
  • 1 cup shredded cheddar cheese
  • 1 cup shredded Monterey Jack cheese
  • 12 large eggs
  • 2 cups milk
  • 1 teaspoon dry mustard powder
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper

Instructions

  1. Lightly 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 and the mixed cheeses over the hash browns.
  4. In a large bowl, whisk together the eggs, milk, dry mustard, salt, and pepper until well combined.
  5. Pour the egg mixture evenly over the sausage, cheese, and hash brown layers. Press down lightly to submerge the bread/potatoes.
  6. Cover the dish tightly with plastic wrap or foil. Refrigerate for at least 4 hours, or preferably overnight.
  7. When ready to bake, preheat your oven to 350 degrees F (175 degrees C). Remove the plastic wrap or foil.
  8. Bake for 45 to 55 minutes, or until the casserole is set in the center and lightly golden brown on top.
  9. Let the casserole rest for 10 minutes before slicing and serving.

Notes

  • For a slow cooker option, assemble the casserole in a lightly greased 6-quart slow cooker. Cook on low for 6 to 8 hours or on high for 3 to 4 hours.
  • You can substitute ham or bacon for the sausage.
  • For a festive touch, add 1/2 cup of diced green bell pepper and 1/4 cup of diced onion with the sausage.

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