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Ultimate Make-Ahead Sausage and Gruyère Christmas Breakfast Strata

A hearty slice of christmas breakfast casserole featuring sausage, bread, and melted cheese, served on a white plate.

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Prepare this hearty, savory breakfast strata the night before for a warm, delicious, and stress-free start to your Christmas morning. It feeds a crowd and uses rich Gruyère cheese.

Ingredients

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

Instructions

  1. Grease a 9×13 inch baking dish. Arrange half of the bread cubes in an even layer in the bottom of the dish.
  2. Sprinkle half of the cooked sausage and half of the Gruyère and Cheddar cheeses evenly over the bread layer. Repeat with the remaining bread, sausage, and cheeses. Press down gently.
  3. In a large bowl, whisk together the eggs, milk, heavy cream, salt, pepper, and nutmeg until fully combined.
  4. 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 absorb the liquid.
  5. Cover the dish tightly with plastic wrap. Refrigerate for at least 8 hours, or preferably overnight.
  6. When ready to bake, preheat your oven to 350 degrees Fahrenheit. Remove the plastic wrap.
  7. Bake uncovered for 50 to 60 minutes, or until the casserole is puffed, set in the center, and lightly golden brown on top. A knife inserted near the center should come out clean.
  8. Let the strata rest for 10 minutes before slicing and serving. This is the best Christmas morning casserole for feeding a crowd.

Notes

  • Using day-old sourdough bread helps the bread absorb the custard mixture without becoming mushy.
  • If you need to bake this faster, allow the casserole to sit at room temperature for 30 minutes after removing it from the refrigerator before baking.
  • This recipe is an easy Christmas breakfast casserole that works well with ham or bacon instead of sausage.

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