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Cozy Overnight Egg Casserole with Sausage

overnight egg casserole with sausage - featured image

A hearty and comforting overnight egg casserole with sausage, perfect for large families. Prep it the night before and wake up to a warm, savory breakfast that’s easy and delicious.

Ingredients

Scale
  • 8 cups cubed day-old bread (white or sourdough)
  • 1 pound breakfast sausage (mild or spicy)
  • 2 cups shredded sharp cheddar cheese
  • 10 large eggs (room temperature)
  • 2 ½ cups whole milk (or 2% or dairy-free alternative like oat milk)
  • 1 teaspoon salt
  • ½ teaspoon black pepper
  • 1 teaspoon dry mustard powder (optional)
  • ½ teaspoon garlic powder
  • 1 teaspoon fresh thyme or ½ teaspoon dried thyme (optional)
  • Optional add-ins: 1 cup chopped bell peppers or sautéed onions
  • Fresh parsley for garnish
  • Hot sauce or salsa on the side

Instructions

  1. Preheat your oven to 350°F (175°C).
  2. Cook the sausage in a large skillet over medium heat until browned and cooked through, about 7-10 minutes. Drain excess fat and set aside to cool slightly.
  3. Cube about 8 cups of day-old bread into roughly 1-inch pieces. If bread is fresh, toast cubes on a baking sheet at 350°F for 10-15 minutes until dry but not browned.
  4. In a large bowl, whisk together 10 large eggs, 2 ½ cups whole milk, 1 teaspoon salt, ½ teaspoon black pepper, 1 teaspoon dry mustard powder, ½ teaspoon garlic powder, and thyme until fully combined and smooth.
  5. Grease a 9×13-inch baking dish. Layer the cubed bread evenly in the dish. Sprinkle cooked sausage and 2 cups shredded sharp cheddar cheese (plus optional veggies if using) evenly over the bread.
  6. Pour the egg mixture slowly over everything, pressing down lightly with a spatula to help the bread soak up the custard.
  7. Cover the casserole tightly with plastic wrap or foil and refrigerate for at least 8 hours, ideally overnight.
  8. Remove the casserole from the fridge about 30 minutes before baking to take off the chill.
  9. Bake uncovered at 350°F (175°C) for 45-50 minutes, or until the top is golden brown and a knife inserted in the center comes out clean.
  10. Let the casserole sit for 10 minutes before slicing. Garnish with fresh parsley and serve warm with hot sauce or salsa on the side.

Notes

Use slightly stale bread for best soak-up; if fresh, toast cubes to dry. Brown sausage well and drain fat to avoid greasiness. Let casserole rest after baking for cleaner slices. Cover casserole tightly overnight to prevent drying and enhance flavor melding. Adjust milk quantity if casserole seems too wet. Room temperature eggs blend better.

Nutrition

Keywords: overnight egg casserole, sausage casserole, breakfast casserole, easy breakfast, large family breakfast, make ahead breakfast