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Overnight Sausage and Egg Breakfast Casserole

A heartwarming breakfast casserole that combines breakfast sausage, eggs, and cheese, perfect for family gatherings and make-ahead convenience.
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Prep Time 15 minutes
Cook Time 45 minutes
Total Time 1 hour
Servings: 8 servings
Course: Breakfast, Brunch
Cuisine: American
Calories: 350
Ingredients Method Notes

Ingredients
  

Main Ingredients
  • 1 pound breakfast sausage Choose your favorite; spicy or mild.
  • 8 large eggs eggs Free-range if possible for the best flavor.
  • 2 cups milk Whole milk for richness, or you can opt for almond or oat milk for a dairy-free version.
  • 4 cups bread cubes Day-old bread works best; sourdough, whole grain, or a baguette are great options.
  • 1.5 cups shredded cheese Cheddar for that gooey, indulgent touch.
  • 1 teaspoon garlic powder For a subtle depth—add fresh garlic for more flavor.
  • to taste salt and pepper Essential for enhancement.
  • to taste chopped fresh herbs (optional) Consider parsley or chives for extra flavor.

Method
 

Preparation
  1. In a large skillet over medium heat, crumble and cook the breakfast sausage until browned. Drain off any excess grease and set aside.
  2. In a medium bowl, whisk together the eggs, milk, garlic powder, salt, and pepper until well combined.
  3. In a large mixing bowl, add the bread cubes and the cooked sausage. Pour the egg mixture over the bread and sausage, ensuring everything is well-coated.
  4. Gently fold in 1 cup of shredded cheese into the mixture—reserve the remaining cheese for topping.
  5. Grease a 9x13-inch casserole dish, then pour the mixture into the dish, spreading it evenly.
  6. Sprinkle the remaining cheese on top, then cover the casserole with aluminum foil or plastic wrap.
  7. Place the casserole in the refrigerator and let it chill overnight.
Baking
  1. The next morning, preheat your oven to 350°F (175°C).
  2. Bake the covered casserole for 30 minutes, then uncover and bake for an additional 15–20 minutes, or until the top is golden brown and the casserole is set.
  3. Let it cool for a few minutes before slicing and serving warm.

Notes

For a vegetarian option, substitute the sausage with sautéed veggies or plant-based sausage. You can add jalapeños or pepper jack cheese for a spicier version. It's best to allow the casserole to rest for about 10 minutes before slicing for neater portions.