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Golden breakfast casserole with hash browns, sausage, eggs, and cheese in a white dish garnished with parsley.

Best Breakfast Casserole with Hash Browns

This best breakfast casserole with hash browns is the ultimate cozy, no-fuss dish for breakfast or brunch. Featuring layers of thawed hash browns, savory sausage, fluffy eggs, and plenty of melted Cheddar cheese, this easy hash brown breakfast casserole combines all the comforts of a classic morning meal in one dish. Perfect for feeding a crowd, it's a make-ahead breakfast casserole that will shine at holiday gatherings or as a hearty weekday meal prep solution.
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Prep Time 15 minutes
Cook Time 1 hour 10 minutes
Resting Time 5 minutes
Total Time 1 hour 25 minutes
Servings: 6 servings
Course: Main Course
Cuisine: American
Ingredients Equipment Method Notes

Ingredients
  

  • 1 (2-pound) package frozen hash brown potatoes thawed
  • 1 pound pork sausage
  • 1 small onion diced
  • 5 large eggs
  • ½ cup milk
  • ½ teaspoon onion powder
  • ⅛ teaspoon garlic powder
  • to taste salt and black pepper
  • 12 ounces shredded Cheddar cheese

Equipment

  • large skillet
  • 8x8-inch deep baking pan or 9x13-inch pan

Method
 

  1. Preheat the oven to 350°F (175°C). Grease a deep-sided 8x8-inch baking dish or, for a thinner casserole, use a 9x13-inch pan instead. Spread the thawed hash browns in an even layer.
  2. In a large skillet over medium heat, cook the sausage and diced onions until the sausage is browned and crumbled, about 10 minutes. Drain any excess grease and set aside.
  3. In a large bowl, whisk together the eggs, milk, onion powder, garlic powder, salt, and pepper until smooth and well combined.
  4. Pour the egg mixture evenly over the hash browns in the baking dish. Sprinkle 6 ounces of Cheddar cheese over the top.
  5. Add the sausage and onion mixture in an even layer, then sprinkle with the remaining 6 ounces of cheese. Cover with aluminum foil.
  6. Bake in the preheated oven for 1 hour. Remove the foil and continue baking for about 10 more minutes, or until a knife inserted in the center comes out clean.
  7. Allow the casserole to sit for 5 minutes before slicing and serving. Enjoy the cheesy, hearty deliciousness!

Notes

This casserole is best baked in a deep 8x8-inch pan. If your pan is less than 3 inches deep, use a 9x13-inch pan instead; thinner casseroles bake faster, so start checking for doneness after 50 to 55 minutes. To make ahead, prepare the casserole the night before, cover tightly, and refrigerate. Bake as directed in the morning for an easy and delicious breakfast. Swap sausage with bacon, ham, or plant-based crumbles, and add veggies like bell peppers or mushrooms for extra flavor.