Easy Overnight Sausage and Egg Casserole (Perfect for Holiday Brunch)

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When hosting a morning gathering, the last thing you want is to spend the entire time in the kitchen. This Easy Overnight Sausage and Egg Casserole is the perfect solution. It’s a savory, satisfying dish that is assembled entirely the night before, allowing you to simply pop it into the oven while you enjoy your coffee. This delicious sausage egg cheese bake features layers of savory breakfast sausage, tender bread cubes, and a rich, cheesy egg custard—all designed for zero morning stress.

Sausage and Egg Casserole

This recipe is the ideal holiday brunch recipe or a favorite for feeding a crowd. The key is the long overnight soak, which allows the bread to fully absorb the seasoned egg and milk mixture, transforming into a moist, puffy, and cohesive casserole by the time it bakes. This make ahead breakfast is guaranteed to be a hit.

Why You’ll Love This Casserole

  • Overnight Prep: Assemble everything the night before, minimizing work on the day of your event.
  • Ultimate Comfort: Features the classic, irresistible combination of sausage, egg, and cheese baked to perfection.
  • Feeds a Crowd: This casserole is excellent for serving large family gatherings or brunches.
  • Foolproof and Flavorful: The simple custard base and savory meat ensure a delicious result every time.

Ingredients

  • 1 lb Ground Breakfast Sausage (mild or spicy)
  • 6 slices White Bread, crusts removed and cubed
  • 1 ½ cups Shredded Cheddar Cheese (or Colby Jack), divided
  • 8 large Eggs
  • 2 cups Milk (whole milk recommended)
  • 1 tsp Dry Mustard Powder
  • ½ tsp Salt
  • ¼ tsp Black Pepper
  • Optional: 1 small Onion, diced

Instructions (Step-by-Step)

  1. Prep Sausage and Oven: Lightly grease a 9×13-inch baking dish. In a skillet, brown the breakfast sausage until cooked through. Drain off any excess grease. (If using, sauté the diced onion with the sausage).
  2. Layer the Base: Spread the bread cubes evenly across the bottom of the prepared baking dish. Sprinkle 1 cup of the shredded cheddar cheese over the bread cubes. Distribute the cooked sausage evenly over the cheese layer.
  3. Prepare the Custard: In a large bowl, whisk together the eggs, milk, dry mustard powder, salt, and pepper until the mixture is completely smooth and well-seasoned.
  4. Assemble Overnight (Make Ahead): Pour the egg custard mixture evenly over the layers in the baking dish, ensuring all the bread cubes are soaked. Cover the dish tightly with plastic wrap or foil and refrigerate for a minimum of 8 hours (or overnight).
  5. Bake: The next morning, preheat your oven to 350°F (175°C). Remove the casserole from the refrigerator while the oven preheats (remove the plastic wrap). Sprinkle the remaining ½ cup of cheese over the top.
  6. Cook and Serve: Bake for 45–55 minutes, or until the casserole is set in the center and the cheese topping is melted and golden brown. Let the casserole rest for 5–10 minutes before slicing and serving.

Storage and Reheating

  • Storage: Leftovers can be stored in an airtight container in the refrigerator for up to 3 days.
  • Reheating: Reheat individual slices in the microwave or place a few slices on a baking sheet and reheat in a 350°F oven until warmed through.
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Expert Tips

  • The Overnight Soak: The long refrigeration period is essential. The bread needs time to fully absorb the liquid, ensuring the casserole is moist and uniform (not dry on top and wet on the bottom).
  • Avoid Overcooking: The casserole is set when a knife inserted near the center comes out mostly clean. If you overbake it, the edges will become tough and rubbery.
  • Full-Fat Milk is Best: Use whole milk or half-and-half for the custard. The higher fat content creates a richer, creamier texture and prevents the casserole from drying out.
  • Freezing Baked Casserole: This casserole can be baked, cooled, cut into individual portions, and frozen for up to 3 months. Thaw overnight and reheat in the oven.

Variations

  • Vegetable Boost: Sauté diced bell peppers, mushrooms, or spinach and add them with the cooked sausage.
  • Spicy Kick: Use spicy breakfast sausage, or add a pinch of cayenne pepper and a teaspoon of chili powder to the egg custard.
  • Bread Swap: Substitute the white bread with cubes of French bread, sourdough, or even crescent roll dough.

Serving Suggestions

Serve this delightful easy sausage and egg casserole with classic brunch complements:

  • Fruit: A bowl of fresh mixed berries or sliced fruit.
  • Sweet Contrast: A side of maple syrup for drizzling (surprisingly delicious!) or a simple coffee cake.
  • Toppings: Salsa, hot sauce, or fresh chopped chives.

Frequently Asked Questions

Q: Can I bake the casserole immediately, without the overnight rest? A: It is not recommended. The bread needs time to absorb the egg mixture. If you bake it immediately, the bread will float on top of the custard, resulting in a dry top layer and a wet, uncooked bottom. The overnight rest is key to the success of this make ahead breakfast.

Q: How do I know when the sausage and egg casserole is done? A: The casserole is done when it is slightly puffed up, the cheese on top is golden brown, and the center is set. Insert a knife near the center; if it comes out mostly clean, it’s ready. The internal temperature should be around 160°F (71°C).

Q: Can I use different types of meat, like ham or bacon? A: Yes. You can substitute the breakfast sausage with 1 pound of cooked, diced ham, crispy crumbled bacon, or ground turkey seasoned with sage and fennel.

Q: Can I freeze the casserole before baking it? A: Yes! Assemble the casserole (up to Step 4), cover it tightly with plastic wrap and then foil, and freeze for up to 1 month. Thaw it completely overnight in the refrigerator, sprinkle with the final cheese layer, and then bake as directed.

Sausage and Egg Casserole

Easy Overnight Sausage and Egg Casserole (Perfect for Holiday Brunch)

This Easy Overnight Sausage and Egg Casserole is the perfect make-ahead breakfast for holidays, brunch gatherings, or busy mornings. Layers of soft bread, savory halal breakfast sausage, and a rich egg-and-cheese custard soak overnight, creating a fluffy, golden casserole with almost no morning effort required.
Print Recipe Pin Recipe
Prep Time 15 minutes
Cook Time 55 minutes
Total Time 1 hour 10 minutes
Course Breakfast, Brunch, Main Dish
Cuisine American

Equipment

  • 9×13-inch baking dish
  • Large mixing bowl
  • Skillet
  • Whisk

Ingredients
  

  • 1 lb Halal Ground Breakfast Sausage (mild or spicy)
  • 6 slices White Bread, crusts removed and cubed
  • 1 ½ cups Shredded Cheddar Cheese, divided
  • 8 large Eggs
  • 2 cups Whole Milk
  • 1 tsp Dry Mustard Powder
  • ½ tsp Salt
  • ¼ tsp Black Pepper
  • 1 Small Onion, diced (optional)

Instructions
 

  • Grease a 9×13-inch baking dish. In a skillet, brown the halal breakfast sausage until cooked through. Drain excess grease. If using onion, sauté it with the sausage.
  • Spread the bread cubes evenly across the dish. Sprinkle 1 cup of shredded cheese over the bread. Add the cooked sausage on top.
  • In a large bowl, whisk eggs, milk, dry mustard, salt, and pepper until completely smooth.
  • Pour the custard evenly over the bread and sausage, ensuring everything is soaked. Cover tightly and refrigerate at least 8 hours or overnight.
  • Preheat oven to 350°F (175°C). Remove cover. Sprinkle the remaining cheese on top. Bake for 45–55 minutes, or until the center is set and golden brown.
  • Let the casserole rest 5–10 minutes before slicing. Serve warm.
Keyword egg bake, halal breakfast casserole, holiday brunch, make ahead brunch, overnight breakfast, sausage egg casserole