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Easy Make-Ahead Egg and Sausage Breakfast Casserole

easy make-ahead egg and sausage breakfast casserole - featured image

A hearty and savory breakfast casserole that can be prepped the night before and baked in the morning, perfect for busy families and meal prep.

Ingredients

Scale
  • 8 large eggs (room temperature)
  • 2 cups whole milk (or 2% milk for lighter option)
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper
  • 1/2 teaspoon garlic powder
  • 12 ounces breakfast sausage (mild or spicy)
  • 5 cups day-old bread, cubed (white bread or sourdough)
  • 1 1/2 cups shredded sharp cheddar cheese
  • 1 cup shredded mozzarella cheese
  • 1/4 cup chopped green onions or chives (optional)

Instructions

  1. Preheat oven to 350°F (175°C). Lightly grease a 9×13-inch baking dish with butter or non-stick spray.
  2. Cook the sausage in a skillet over medium heat for 7-8 minutes until browned and cooked through. Drain excess fat and set aside to cool.
  3. Cut day-old bread into 1-inch cubes.
  4. In a large bowl, whisk together eggs, milk, salt, black pepper, and garlic powder until smooth.
  5. Layer half of the bread cubes evenly in the baking dish. Sprinkle half of the cooked sausage, half of the cheddar cheese, and half of the mozzarella cheese over the bread.
  6. Repeat layering with remaining bread, sausage, and cheeses.
  7. Pour the egg mixture evenly over the layers and press down gently to help bread absorb the liquid.
  8. Optionally sprinkle chopped green onions or chives on top.
  9. Cover tightly with foil and refrigerate for at least 4 hours or overnight.
  10. Bake uncovered at 350°F (175°C) for 50-60 minutes until the top is golden and the center is set but slightly jiggly.
  11. Let rest for 5-10 minutes before slicing and serving.

Notes

Letting the casserole soak overnight in the fridge ensures a custardy texture. Use day-old or lightly toasted bread cubes to prevent sogginess. If the top browns too quickly, tent with foil halfway through baking. Adjust baking time if using a different size dish.

Nutrition

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