Breakfast & Brunch > Breakfast & Brunch for a Crowd > Make-Ahead Breakfasts > Breakfast Casserole Recipes

Overnight Sausage and Hash Brown Breakfast Casserole

A hearty and flavorful breakfast casserole featuring sausage, hash browns, cheese, and eggs. Perfect for feeding a crowd and can be prepared the night before.

Prep Time
20 minutes
Cook Time
45-55 minutes
Servings
8-10
Ingredients
  • 1 pound Breakfast sausage
  • 30 ounces Frozen hash browns
  • 2 cups Shredded cheddar cheese
  • 12 Eggs
  • 1 cup Milk
  • 1/2 cup Diced onion
  • 1 teaspoon Salt
  • 1/2 teaspoon Black pepper
  • 1/4 teaspoon Dried mustard

Prepare the Sausage and Hash Browns

Begin by browning the breakfast sausage in a large skillet over medium heat. Crumble it as it cooks. Once browned, drain any excess grease. In a large bowl, combine the browned sausage and frozen hash browns. Mix well.

Add Cheese and Onion

Add the shredded cheddar cheese and diced onion to the bowl with the sausage and hash browns. Stir everything together until evenly distributed.

Prepare the Egg Mixture

In a separate bowl, whisk together the eggs, milk, salt, pepper, and dried mustard. Ensure the mixture is well combined.

Assemble the Casserole

Grease a 9x13 inch baking dish. Spread the sausage, hash brown, cheese, and onion mixture evenly in the dish. Pour the egg mixture over the top, making sure to cover all the ingredients. Gently press down on the mixture to ensure everything is submerged in the egg mixture.

Refrigerate Overnight

Cover the baking dish with plastic wrap and refrigerate overnight (or for at least 4 hours). This allows the flavors to meld together.

Bake the Casserole

Preheat oven to 350°F (175°C). Remove the plastic wrap from the baking dish and bake for 45-55 minutes, or until the casserole is golden brown and set. A knife inserted into the center should come out clean. If the top starts to brown too quickly, you can loosely cover it with aluminum foil.

Cool and Serve

Let the casserole cool for a few minutes before cutting into squares and serving. Enjoy!

← Overnight Oats for a Crowd: Peanut Butter Banana Bliss Sheet Pan Pancake Brunch Bar →

FAQ

  • Can I use a different type of sausage?

    Yes, you can substitute with Italian sausage, turkey sausage, or even a vegetarian sausage alternative.
  • Can I add vegetables to the casserole?

    Absolutely! Bell peppers, mushrooms, and spinach are great additions. Sauté them before adding to the casserole.
  • How long can I store leftovers?

    Leftovers can be stored in the refrigerator for up to 3 days.
  • Can I freeze the casserole?

    Yes, you can freeze the baked casserole. Let it cool completely, then wrap it tightly in plastic wrap and foil. Freeze for up to 2 months. Thaw overnight in the refrigerator before reheating.