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A hot and easy sausage breakfast casserole baked to golden perfection in a dish.

Easy Sausage Breakfast Casserole

This easy breakfast casserole features savory sausage, eggs, bread, and cheese, perfect for a hearty morning meal. Prepare it the night before for a quick and delicious breakfast.
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Prep Time 15 minutes
Cook Time 50 minutes
Total Time 1 hour 5 minutes
Servings: 6 servings
Calories: 400
Ingredients Equipment Method Notes

Ingredients
  

Main Ingredients
  • 1 lb breakfast sausage defrosted
  • 6 large eggs
  • 2 cups milk any kind works, whole or 2% for richness
  • 1 teaspoon dry mustard powder for a subtle tang and color
  • ½ teaspoon salt
  • ¼ teaspoon black pepper
  • 6 slices bread crusts removed and cubed (day-old bread works best)
  • 2 cups shredded cheddar cheese or a blend of your favorite cheeses
Optional Add-ins
  • diced onions, bell peppers, or mushrooms for extra flavor and veggies

Equipment

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

Method
 

Preparation
  1. Brown the breakfast sausage in a large skillet over medium heat, breaking it up as it cooks.
  2. Drain excess grease and set the cooked sausage aside.
  3. In a large bowl, whisk together eggs, milk, dry mustard, salt, and pepper until well combined.
Assembly
  1. Grease a 9x13 inch baking dish and scatter the bread cubes evenly across the bottom.
  2. Sprinkle half of the shredded cheese over the bread, then add the cooked sausage and any optional vegetables.
  3. Pour the egg mixture evenly over the sausage, bread, and cheese, then top with the remaining shredded cheese.
Baking
  1. For best results, cover and refrigerate the casserole for at least 30 minutes, or overnight, to allow the bread to soak.
  2. Preheat your oven to 350°F (175°C) and bake the uncovered casserole for 45-55 minutes.
  3. Bake until golden brown, set in the center, and a knife inserted comes out clean.
  4. Let the casserole rest for 5-10 minutes before slicing and serving to allow it to set.

Notes

Overnight chilling is highly recommended for a more flavorful and cohesive casserole. Feel free to customize with your favorite vegetables or different types of cheese.