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Bird's-eye view of a casserole topped with browned sausage, melted cheddar cheese, and golden hash browns.

Overnight Cheesy Sausage Hashbrown Breakfast Casserole

Sausage and hash brown breakfast casserole with cheddar cheese, eggs, and milk, baked overnight for a hearty morning meal.
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Prep Time 10 minutes
Cook Time 40 minutes
Total Time 50 minutes
Servings: 12 servings
Course: Breakfast
Cuisine: American
Calories: 370
Ingredients Method

Ingredients
  

Overnight Prep & Bake
  • 2 cups shredded mild cheddar
  • 1 (30 oz) bag frozen or refrigerated shredded hash browns for crispier hash browns: thaw and pat with paper towel before browning
  • 2 lb breakfast sausage hot if you want more kick
  • 2 cups milk
  • 8 medium eggs
  • 1/4 tsp onion powder
  • 1/4 tsp garlic powder
  • 1 tsp salt
  • 1/2 tsp pepper
Same Day Make & Bake
  • 2 cups shredded mild cheddar
  • 1 (30 oz) bag frozen or refrigerated shredded hash browns for crispier hash browns: thaw and pat with paper towel before browning
  • 2 lb breakfast sausage hot if you want more kick
  • 2 cups milk
  • 8 medium eggs
  • 1/4 tsp onion powder
  • 1/4 tsp garlic powder
  • 1 tsp salt
  • 1/2 tsp pepper

Method
 

Overnight Prep & Bake

  1. Cook Sausage:

    In a large frying pan, cook sausage until brown. Drain and set aside.

  2. Brown Hash Browns:

    In the same frying pan, lightly brown hash browns (if your skillet is on the smaller side, you may want to do this in two separate batches). Note: for crispier hash browns, thaw and pat with a paper towel before browning in this step.

  3. Layer Casserole:

    Place hash browns into a greased 9x13 casserole dish. Top with sausage and cheese.

  4. Whisk Egg Mixture:

    In a medium bowl, whisk eggs, milk, and all spices until combined. Pour over casserole mixture.

  5. Refrigerate Overnight:

    Cover casserole dish with aluminum foil and place in the refrigerator overnight.

  6. Preheat Oven:

    The next day, preheat oven to 350°F (175°C).

  7. Bake Casserole:

    Bake uncovered at 350°F (175°C) for 40 minutes or until cheese starts to bubble and brown on top.
Same Day Make & Bake

  1. Skip Refrigeration:

    For same-day preparation: Follow steps 1-4 and steps 6-7 listed above (omit overnight refrigeration).