The Ultimate Overnight Breakfast Casserole for Easy Mornings
Looking for the best overnight breakfast casserole? This one is quick, easy, and perfect for cozy mornings! Whether you’re after healthy brunch ideas or a simple way to impress guests, this easy dish is loaded with flavor. It’s the best solution for busy weekends or holiday breakfasts. Try this quick and simple casserole idea that’s also freezer-friendly and beginner-approved!
- 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
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
- 1/4 cup chopped green onions
Instructions
1. Cook the sausage in a skillet over medium heat until browned. Set aside to cool.
2. In a large bowl, whisk together the eggs, milk, sour cream, salt, and pepper until smooth.
3. Grease a 9×13 baking dish and layer half of the hash browns, half the sausage, and a layer of cheese.
4. Repeat the layers with the remaining hash browns, sausage, and cheese.
5. Pour the egg mixture evenly over the top of the layered ingredients.
6. Cover with foil and refrigerate overnight.
7. Preheat the oven to 350°F in the morning and bake the casserole, covered, for 45 minutes.
8. Remove the foil and bake an additional 20–25 minutes until golden and fully set.
9. Top with chopped green onions and serve warm.
Notes
You can substitute bacon or ham for sausage.
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 keep it from falling apart.