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A golden-baked cheesy sausage breakfast casserole with fluffy eggs, crispy bread cubes, and melted cheese served in a white baking dish.

Cheesy Sausage Breakfast Casserole

Fluffy eggs, savory sausage, melted cheese, and golden bread cubes baked into a hearty make-ahead breakfast casserole — perfect for brunch or meal prep!
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Prep Time 15 minutes
Cook Time 40 minutes
Course Breakfast
Cuisine American
Servings 8
Calories 380 kcal

Ingredients
  

  • 1 lb 450 g breakfast sausage, cooked and crumbled
  • 6 large eggs
  • 2 cups milk
  • 1 cup shredded cheddar cheese
  • ½ cup shredded mozzarella cheese
  • 4 cups cubed French bread or brioche
  • ½ tsp salt
  • ¼ tsp black pepper
  • ¼ tsp garlic powder
  • 1 tbsp chopped fresh parsley optional, for garnish

Instructions
 

  • Preheat oven: Set to 350°F (175°C) and grease a 9x13-inch baking dish.
  • Cook the sausage: In a skillet, brown the sausage until cooked through. Drain excess fat and set aside.
  • Mix the custard: In a large bowl, whisk together eggs, milk, salt, pepper, and garlic powder.
  • Assemble: Add bread cubes and sausage to the egg mixture. Toss to coat evenly.
  • Top with cheese: Pour mixture into the prepared baking dish and sprinkle cheddar and mozzarella evenly over the top.
  • Bake: Place uncovered in the oven and bake for 35–40 minutes or until golden and set in the center.
  • Serve: Let rest for 5 minutes before slicing. Garnish with parsley and serve warm.

Notes

Tips & Variations

Add veggies: Try bell peppers, spinach, or mushrooms for a nutritious boost.
Swap the cheese: Monterey Jack, Swiss, or pepper jack work great too.
Make it spicy: Add diced jalapeños or use spicy sausage.
Go vegetarian: Replace sausage with sautéed veggies or plant-based sausage.

Storage

Refrigerate: Up to 3–4 days in an airtight container.
Freeze: Up to 2 months — wrap tightly after cooling completely.
Reheat: Oven at 350°F for 15–20 minutes or microwave 1–2 minutes per slice.
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