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Christmas Morning Breakfast Casserole
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Christmas Morning Breakfast Casserole

This Christmas Morning Breakfast Casserole is filled with savory sausage, fluffy eggs, cubed bread, colorful bell peppers, and melted cheddar cheese. Prepare it the night before and bake it fresh for an easy, comforting Christmas breakfast.
Prep Time20 minutes
Cook Time50 minutes
Chill Time4 hours
Total Time5 hours 10 minutes
Servings: 8 Slices
Calories: 450kcal

Ingredients

  • 6 cups cubed day-old bread
  • 1 pound breakfast sausage
  • 8 large eggs
  • 2 cups whole milk
  • 2 cups shredded cheddar cheese
  • 1 red bell pepper diced
  • ½ green bell pepper diced
  • ½ medium onion finely chopped
  • 1 teaspoon Dijon mustard
  • ½ teaspoon salt or to taste
  • ½ teaspoon black pepper
  • 1 tablespoon butter or oil
  • 1 tablespoon chopped fresh parsley optional

Instructions

  • Cook the sausage: Heat the butter or oil in a skillet over medium heat. Add the sausage and cook until browned and fully cooked, breaking it into crumbles.
  • Cook the vegetables: Add the chopped onion and bell peppers. Cook for 3–4 minutes, then drain any excess grease.
  • Prepare the baking dish: Grease a 9 × 13-inch baking dish. Spread the bread cubes evenly across the bottom.
  • Add the filling: Distribute the cooked sausage and vegetables over the bread. Sprinkle the shredded cheddar cheese on top.
  • Whisk the eggs: In a large bowl, whisk together the eggs, milk, Dijon mustard, salt, and black pepper.
  • Assemble the casserole: Pour the egg mixture evenly over the bread, sausage, vegetables, and cheese.
  • Chill: Cover and refrigerate for at least 4 hours or overnight.
  • Preheat the oven: Heat the oven to 350°F (175°C).
  • Bake: Uncover the casserole and bake for 45–60 minutes, until the center is set and reaches 160°F (71°C).
  • Rest and serve: Let the casserole rest for 5–10 minutes. Garnish with fresh parsley, slice, and serve warm.

Notes

  • Day-old bread absorbs the egg mixture better and helps prevent a soggy casserole.
  • Assemble the casserole on Christmas Eve to save time on Christmas morning.
  • Substitute cooked bacon or diced ham for the sausage if desired.
  • Store leftovers in an airtight container in the refrigerator for 3–4 days.
  • Reheat leftovers to 165°F (74°C).

Nutrition

  • Calories: 480 kcal
  • Carbohydrates: 28 g
  • Protein: 25 g
  • Fat: 29 g
  • Saturated Fat: 12 g
  • Cholesterol: 245 mg
  • Sodium: 850 mg
  • Fiber: 2 g
  • Sugar: 5 g