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Christmas Breakfast Casserole Recipe

4.6 from 149 reviews

This Christmas Breakfast Casserole is a hearty, crowd-pleasing dish perfect for holiday mornings. A savory blend of browned breakfast sausage, sautéed peppers and onions, cubed white bread, and shredded cheddar cheese is soaked in a seasoned egg and milk mixture, then baked until golden and fluffy. Make it ahead by refrigerating overnight for a stress-free festive breakfast.

Ingredients

Scale

Meat

  • 1 pound breakfast sausage

Dairy & Eggs

  • 10 large eggs
  • 2 cups whole milk
  • 2 cups shredded cheddar cheese

Vegetables

  • 1 green bell pepper, chopped
  • 1 red bell pepper, chopped
  • 1 small onion, diced

Bakery

  • 6 slices white bread, cubed

Seasonings

  • 1 teaspoon salt
  • ½ teaspoon black pepper

Instructions

  1. Cook Sausage: In a skillet over medium heat, cook the breakfast sausage until it is browned and crumbly, breaking it up as it cooks to ensure even texture.
  2. Sauté Vegetables: Add the diced onion, chopped green bell pepper, and chopped red bell pepper to the skillet with the sausage. Sauté lightly until the vegetables are softened but still retain some crunch.
  3. Prepare Baking Dish: Grease a large baking dish thoroughly to prevent sticking. Evenly layer the cubed white bread on the bottom of the dish.
  4. Layer Sausage and Veggies: Spread the cooked sausage and sautéed vegetables evenly over the layer of bread cubes.
  5. Add Cheese: Sprinkle the shredded cheddar cheese evenly on top of the sausage and vegetable layer.
  6. Mix Egg Mixture: In a mixing bowl, whisk together the large eggs, whole milk, salt, and black pepper until fully combined and slightly frothy.
  7. Pour Egg Mixture: Pour the whisked egg and milk mixture evenly over the casserole layers in the baking dish, ensuring all ingredients are well soaked.
  8. Refrigerate (Optional): Cover the baking dish with plastic wrap or foil and refrigerate overnight if you want to prepare the casserole ahead of time, allowing flavors to meld.
  9. Preheat Oven: The next morning, remove the casserole from the refrigerator and preheat your oven to 350 degrees Fahrenheit (175 degrees Celsius).
  10. Bake: Bake the casserole uncovered for about 45 minutes, or until the top is golden brown and the center is set, indicating the eggs are fully cooked.

Notes

  • For extra flavor, you can add herbs like parsley or chives to the egg mixture.
  • Substitute whole wheat or multigrain bread for a healthier alternative.
  • This casserole can be made vegetarian by omitting the sausage and increasing the amount of vegetables or adding a meat substitute.
  • Make sure the casserole is fully cooled before refrigerating overnight to prevent condensation and sogginess.
  • Leftovers can be refrigerated for up to 3 days and reheated in the oven or microwave.

Keywords: Christmas breakfast, holiday casserole, egg casserole, sausage casserole, holiday brunch, make-ahead breakfast