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–+ servings
A square slice of the Best Sausage Egg Breakfast Casserole showing golden-brown bread cubes, melted cheese, and sausage crumbles.

Best Sausage Egg Breakfast Casserole

This sausage egg breakfast casserole is a hearty and filling option perfect for busy families and weekend brunches. Prepare it ahead of time for easy weekday mornings or impress guests with a comforting dish that brings everyone together.
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Prep Time 20 minutes
Cook Time 45 minutes
Chilling Time 30 minutes
Total Time 1 hour 35 minutes
Servings: 8 people
Course: Breakfast
Cuisine: American
Ingredients Equipment Method Notes

Ingredients
  

For the Casserole
  • 1 tablespoon olive oil
  • 14-16 ounces uncooked pork breakfast sausage
  • 12 large eggs
  • 2 cups half-and-half
  • 2 teaspoons dry mustard
  • 1.5 teaspoons kosher salt
  • 0.5 teaspoon freshly ground black pepper
  • 8 ounces sharp cheddar cheese, shredded preferably white, about 2 cups
  • 6 slices hearty white sandwich bread about 8 to 9 ounces, cut into 1-inch cubes

Equipment

  • Large skillet
  • 9x13-inch baking dish
  • Whisk
  • large bowl

Method
 

  1. Preheat your oven to 350°F (175°C). Lightly grease a 9x13 inch baking dish with cooking spray or olive oil.
  2. In a large skillet over medium heat, cook the breakfast sausage, breaking it up with a spoon, until browned and cooked through. Drain off any excess grease.
  3. In a large bowl, whisk together the eggs, half-and-half, dry mustard, kosher salt, and black pepper until well combined.
  4. Add the cooked sausage, shredded cheddar cheese, and cubed bread to the egg mixture. Stir gently to combine everything.
  5. Pour the mixture into the prepared baking dish, spreading it evenly.
  6. Cover the dish with plastic wrap and refrigerate for at least 30 minutes, or up to overnight. This allows the bread to soak up the egg mixture.
  7. When ready to bake, remove the plastic wrap and bake in the preheated oven for 45-55 minutes, or until the casserole is set and golden brown on top. A knife inserted into the center should come out clean.
  8. Let the casserole rest for 5-10 minutes before slicing and serving.

Notes

This casserole is perfect for making ahead. You can assemble it the night before and bake it in the morning. It reheats well, making it a great option for leftovers.

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