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Martha Stewart Christmas Breakfast Casserole Recipe

3.8 from 32 reviews

Martha Stewart’s Christmas Breakfast Casserole is a savory and satisfying dish perfect for holiday mornings. Combining eggs, cheese, sausage, and fresh vegetables layered over cubed bread, this bake offers a comforting and hearty start to your festive day. The casserole can be prepared ahead and baked to golden perfection, making it an ideal make-ahead breakfast for family gatherings.

Ingredients

Scale

Egg Mixture

  • 12 large eggs
  • 1 cup milk or half-and-half
  • 1 teaspoon salt
  • ½ teaspoon black pepper
  • 1 teaspoon garlic powder
  • 1 teaspoon dried thyme

Savory Add-ins

  • 2 cups shredded cheese (cheddar, mozzarella, or a mix)
  • 1 cup cooked and crumbled breakfast sausage (or a vegetarian alternative)
  • 1 cup diced onions
  • 1 cup diced bell peppers (optional)
  • 2 cups fresh spinach (or other greens)

Base

  • 2 cups cubed bread (preferably day-old or slightly toasted)
  • Butter or cooking spray (for greasing the baking dish)

Instructions

  1. Prepare the Ingredients: Cook the breakfast sausage in a skillet over medium heat until browned and fully cooked. In the same skillet, sauté the diced onions, bell peppers, and fresh spinach until softened, about 5 minutes. Set all cooked ingredients aside to cool slightly.
  2. Make the Egg Mixture: In a large mixing bowl, whisk together the 12 eggs, milk or half-and-half, salt, black pepper, garlic powder, and dried thyme until well combined. Stir in the cooked sausage, sautéed vegetables, and shredded cheese until evenly incorporated.
  3. Layer the Bread: Preheat the oven to 350°F (175°C). Grease a 9×13-inch baking dish with butter or cooking spray. Spread the cubed bread evenly over the bottom of the dish. Pour the prepared egg and sausage mixture over the bread, ensuring that the bread is fully coated and submerged.
  4. Refrigerate Overnight (Optional): Cover the baking dish with plastic wrap and place it in the refrigerator overnight. This step allows the bread cubes to absorb the egg mixture fully, enhancing the casserole’s texture and flavor.
  5. Bake: Remove the casserole from the refrigerator if refrigerated overnight. Bake uncovered in the preheated oven for 45–50 minutes, or until the top is golden brown and the center is set and no longer jiggly. Use a knife inserted in the center to check for doneness.
  6. Rest and Serve: Allow the casserole to rest for about 5 to 10 minutes after baking to set the texture. Cut into portions and serve warm as a festive breakfast dish.

Notes

  • Use day-old or slightly toasted bread to ensure the casserole holds together and has a firmer texture.
  • Avoid overbaking to keep the casserole moist and prevent it from drying out; it should be golden and slightly puffed.
  • Let the casserole rest after baking to help it set and make slicing easier.
  • For added holiday flavor, try incorporating herbs like rosemary or sage into the egg mixture.
  • Use half-and-half or low-fat milk for a lighter version of the casserole.

Keywords: Christmas breakfast casserole, holiday breakfast, egg casserole, sausage casserole, easy breakfast bake