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Hash Brown Breakfast Casserole Recipe – Easy Holiday Brunch with Sausage & Cheddar

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This hash brown breakfast casserole combines crispy hash browns, savory sausage, fluffy eggs, and melty cheddar cheese for a comforting, crowd-pleasing brunch. It’s quick to assemble, perfect for holidays or meal prep, and easily adaptable for different diets.

Ingredients

Scale
  • 20 oz frozen hash browns (unseasoned or lightly seasoned), thawed
  • 1 lb breakfast sausage (pork or turkey, casings removed)
  • 8 large eggs, room temperature
  • 1 cup whole milk
  • 2 cups sharp cheddar cheese, shredded (divided)
  • 1 small yellow onion, diced
  • 1 teaspoon garlic powder
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 2 tablespoons butter, melted
  • 2 tablespoons fresh parsley, chopped (optional)

Instructions

  1. Preheat oven to 375°F (190°C). Grease a 9×13-inch baking dish with butter or cooking spray.
  2. Heat a large skillet over medium-high. Add sausage, breaking it up with a spatula, and cook for 5-7 minutes until browned and cooked through. Add diced onion in the last 2 minutes. Drain excess fat and set aside.
  3. In a large bowl, whisk together eggs and milk until fully combined. Add garlic powder, salt, and pepper.
  4. Add thawed hash browns to the egg mixture and stir to coat evenly.
  5. Fold in 1 1/2 cups cheddar cheese and the cooked sausage/onion mixture. Mix gently.
  6. Spread mixture evenly in the prepared baking dish. Sprinkle remaining 1/2 cup cheddar on top and drizzle with melted butter.
  7. Bake for 40-45 minutes, checking at 30 minutes. If the top browns too quickly, cover loosely with foil. The casserole is done when the center is set and a knife comes out clean.
  8. Let cool for 10 minutes before slicing. Garnish with fresh parsley if desired.

Notes

Thaw hash browns fully and squeeze out excess moisture for best texture. Brown sausage well for extra flavor. Mix most cheese in, but save some for topping. Don’t overmix. Rest casserole before slicing for neat portions. Assemble ahead and refrigerate overnight for easy mornings. Adapt with vegetarian, dairy-free, or spicy variations as desired.

Nutrition

Keywords: hash brown casserole, breakfast casserole, sausage and cheddar, holiday brunch, easy breakfast, make ahead, gluten free, comfort food