The Ultimate Overnight Breakfast Casserole
A quick, easy, and hearty overnight breakfast casserole layered with sausage, hash browns, eggs, sour cream, and cheddar cheese. Perfect for cozy mornings or brunch gatherings.
- Prep Time: 15 minutes
- Cook Time: 65 minutes
- Total Time: 80 minutes plus overnight chill
- Yield: 8 servings
- Category: Breakfast
- Method: Baking
- Cuisine: American
Ingredients
- 1 pound breakfast sausage
- 1 package frozen hash browns (about 30 oz)
- 8 large eggs
- 1 cup milk
- 1 cup sour cream
- 2 cups shredded cheddar cheese
- ½ teaspoon salt
- ¼ teaspoon black pepper
- ¼ cup chopped green onions
Instructions
- Cook sausage in a skillet over medium heat until browned; set aside to cool.
- In a large bowl, whisk together eggs, milk, sour cream, salt, and pepper until smooth.
- Grease a 9×13 baking dish. Layer half of the hash browns, half the sausage, and a layer of cheese.
- Repeat with remaining hash browns, sausage, and cheese.
- Pour egg mixture evenly over layers, cover with foil, and refrigerate overnight.
- Preheat oven to 350°F. Bake covered for 45 minutes, then uncover and bake 20–25 minutes until golden and set.
- Top with chopped green onions and serve warm.
Notes
- Substitute bacon or ham for sausage if desired.
- Add vegetables like bell peppers or spinach for a healthier version.
- Use a mix of cheddar and mozzarella for extra creaminess.
- Let sit for 5 minutes before slicing to prevent falling apart.