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–+ servings
A golden-brown slice of the Best Sausage Egg Breakfast Casserole topped with melted cheese and sausage crumbles.

Best Sausage Egg Breakfast Casserole

This sausage egg breakfast casserole is a hearty and satisfying dish perfect for busy families and meal preppers. It's easy to prepare in advance and fits well within a ketogenic lifestyle, offering comforting flavors to start your day.
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Prep Time 15 minutes
Cook Time 45 minutes
Resting Time 10 minutes
Total Time 1 hour 10 minutes
Servings: 8 servings
Course: Breakfast
Cuisine: American
Ingredients Equipment Method Notes

Ingredients
  

For the Casserole
  • 1 tablespoon olive oil
  • 14 to 16 ounces uncooked pork breakfast sausage
  • 12 large eggs
  • 2 cups half-and-half
  • 2 teaspoons dry mustard
  • 1 1/2 teaspoons kosher salt
  • 1/2 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

Equipment

  • Large skillet
  • 9x13 inch baking dish
  • Whisk
  • Measuring cups
  • Measuring spoons

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, add the olive oil and the breakfast sausage. Cook, breaking up the sausage with a spoon, until it is browned and cooked through. Drain off any excess grease.
  3. Tear the bread slices into bite-sized pieces and spread them evenly in the bottom of the prepared baking dish.
  4. Scatter the cooked sausage over the bread pieces.
  5. In a large bowl, whisk together the eggs, half-and-half, dry mustard, salt, and pepper until well combined.
  6. Pour the egg mixture evenly over the sausage and bread in the baking dish.
  7. Sprinkle the shredded cheddar cheese evenly over the top.
  8. Bake for 45 to 55 minutes, or until the casserole is set and golden brown. A knife inserted into the center should come out clean.
  9. Let the casserole rest for about 10 minutes before slicing and serving.

Notes

This casserole can be assembled the night before and refrigerated. Bake as directed, adding a few extra minutes to the cooking time if baking directly from the refrigerator.

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