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A hashbrown breakfast casserole is the ultimate comfort food! Whether it’s a holiday breakfast feast, a laid-back weeknight dinner, or a potluck, this cheesy dish is always a hit. It’s quick to make and oh-so-delicious, making it a favorite for any occasion. With a hearty base of crispy hash browns and a flavorful topping of eggs, bacon, sharp cheese, and bright spinach, this dish is sure to be a hit with everyone. The best part? It reheats beautifully, making it an ideal option for busy families. Whether you’re hosting a weekend brunch or simply want to simplify your morning routine, this hashbrown casserole is a delicious way to start the day.

A baked hashbrown breakfast casserole in a rectangular white dish, garnished with green herbs. The dish is surrounded by a bowl of chopped chives, blocks of cheese, eggs, and a pepper grinder.

Start your day with a delicious and satisfying hashbrown casserole with all your favorite ingredients: bacon, cheese, spinach, and a dash of hot sauce for a little sass.

Looking for more breakfast and brunch recipes? Whip up breakfast fries, breakfast sliders or sheet pan eggs. These breakfast burritos are easy too!

A slice of a hashbrown casserole is held up by a spatula, reminiscent of a hearty hash brown breakfast casserole. Orange slices are visible in the background.

Why You’ll Love It

Made with basic ingredients: Mostly pantry staple ingredients that you probably already have on hand.
Dead simple and a great make-ahead: This breakfast casserole with hash browns and bacon is a cinch to prepare and the perfect plan-ahead recipe for Christmas morning.
A good base recipe: You can easily swap the ingredients and customize this delicious breakfast casserole.
Freezer-friendly: You can freeze this casserole for up to 3 months.

A square piece of hash brown breakfast casserole garnished with chives on a white plate with a fork, next to a bowl of orange slices. Spinach leaves are in a dish in the background.

Ingredients for a Hashbrown Casserole

A complete list of ingredients and amounts can be found in the recipe card below.

Crispy bacon: Cooking the bacon until crispy elevates its texture and provides a delightful contrast to the softer components. Feel free to sub breakfast sausage in this egg bake casserole.
Yellow onion: Provides a sweet and mild flavor that complements the bacon and adds depth to the dish.
Eggs: These are the base of the casserole, providing structure and richness.
Milk: This helps to create a creamy and smooth consistency in the egg mixture. You can use whole milk or a similar substitute.
Baby spinach: Provides a pop of color and a boost of nutrients.
Hot sauce: Adds a spicy kick to the casserole. Use as desired for a bit of heat and extra flavor dimension.
Frozen hash browns: The starchy base of the casserole that adds texture and body. Ensure your shredded or cubed hashbrowns are well-thawed and drained to avoid excess moisture in the dish.
Swiss cheese: Melts beautifully in your hash brown casserole and adds a creamy, nutty flavor. Using freshly shredded cheese enhances reliability and taste. Sub shredded cheddar cheese if liked.

Ingredients for a hashbrown breakfast casserole arranged on a marble surface, including eggs, shredded cheese, chopped vegetables, milk, bacon pieces, and seasonings.

How to Make a Hash Brown Breakfast Casserole

For more detailed instructions with weights and measurements, jump to the printable recipe card.

Prepare the oven and dish: Preheat your oven to 350°F. Grease a 9 x 13-inch casserole dish with nonstick cooking spray, oil or butter, and set it aside.
Cook the bacon and onions: In a skillet over medium heat, cook the diced bacon for about 5 minutes. Add the diced onions and cook until they become translucent and the bacon is crispy. Remove from heat and set aside.
Mix the egg mixture: In a large bowl, whisk together the eggs, milk, salt, pepper, nutmeg, chopped spinach, and hot sauce (if using).
Combine all ingredients: Add the thawed hash browns, shredded Swiss cheese, cooked bacon, and onions to the bowl with the egg mixture. Mix everything until well combined.
Bake the casserole: Pour the hashbrown casserole mixture into the prepared baking dish. Bake for 40 to 45 minutes or until the center is set.
Garnish and serve: Garnish the finished egg casserole with chopped chives before serving.

A hash brown breakfast casserole with visible ingredients like cheese, spinach, and pieces of bacon in a rectangular dish. A small bowl of fresh spinach sits beside the dish.

Substitutions and Variations

Hash brown swaps: I’m using shredded hash browns for this easy recipe, but you could also use leftover French fries, roasted potatoes, or sweet potatoes.
Other meat: Cooked pork sausage, turkey sausage or any other cooked sausage, diced ham, ground beef, and turkey bacon are all great meats to use.
More vegetables: Try making it with bell peppers (green bell pepper and red bell pepper are both good), asparagus, broccoli, mushrooms, or kale.
Cheese alternatives: Monterey jack, pepper jack cheese, sharp cheddar cheese, or gruyere would work.
For a richer version: Milk can be substituted with two tablespoons of heavy whipping cream. And you can serve the casserole with a dollop of sour cream.

A hashbrown casserole with eggs, cheese, bacon, and herbs in a white rectangular dish on a marble countertop, surrounded by various ingredients including cracked eggs, spinach, and a pepper mill.

Serving Suggestions

Appetizer: Start with a cozy bowl of carrot cake oatmeal or these pancake nachos as a fun appetizer. Try this Mexican pudding for something creamy!
Main: Serve a wedge or slice of this breakfast casserole recipe with hash browns or breakfast potatoes.
Dessert: After the hashbrown breakfast casserole, end off with a plate of this super delicious bombolinI donuts or these cream cheese Danishes!

A slice of baked egg and vegetable hash brown breakfast casserole is being lifted from a white baking dish. An orange slice and greens are visible in the background.

How to Store This Breakfast Casserole

Store: Leftovers can be stored in an airtight container or in the casserole dish with plastic wrap on top, in the fridge for up to 4 days.
Freezer: Freeze any leftovers by slicing the casserole and storing the squares in a gallon-size Ziploc bag.
Thaw: Leave the leftovers or frozen premade casserole in the fridge overnight to thaw.
Reheat: Reheat in the microwave, air fryer or oven until warm.

A plate with a slice of a baked breakfast casserole garnished with herbs, a fork, orange wedges, and a small dish of chopped green onions sits beside it.

Top Tips

Thaw and drain hash browns: Make sure the frozen hashbrowns are fully thawed and well-drained to prevent excess moisture, which can make the easy breakfast casserole soggy.
Cook bacon and onions properly: Cook until it is crispy and the onions are translucent. This step adds flavor and texture to the casserole.
Check for doneness: Bake until the center is set. You can check this by inserting a knife or toothpick into the center; it should come out clean when done.
Let it rest: Allow the casserole to rest for a few minutes after baking. This helps it set further and makes it easier to slice and serve.

A hash brown breakfast casserole with visible spinach and other ingredients sits on a countertop, surrounded by egg shells, cheese, pepper grinder, green onions, fresh spinach, salt, and a kitchen towel.

Hashbrown Breakfast Casserole FAQs

How do I know when the casserole is done?

The casserole is done when the center is set and no longer jiggly. You can test this by inserting a knife or toothpick into the center; it should come out clean. The top should be golden brown.

What can I use instead of hot sauce?

If you prefer a milder flavor, skip the hot sauce or replace it with a dash of paprika or a pinch of cayenne pepper for a little kick. You can also use mild salsa or diced green chilies for a different type of heat.

How can I prevent the casserole from being too watery?

Make sure the shredded hashbrowns are well-thawed and drained. If using fresh vegetables, sauté them first to remove excess moisture. Also, avoid using too much milk or directly adding watery ingredients to the mixture.

A close-up of a rectangular white dish containing slices of a baked egg and hash brown breakfast casserole with spinach, cheese, and bacon. In the background, there is a plate with orange slices and fresh spinach leaves.

Hashbrown Breakfast Casserole Recipe

5 from 2 votes

Hash Brown Breakfast Casserole

By: Bella Bucchiotti
Start your day with a delicious and satisfying hashbrown casserole with all your favorite ingredients: bacon, cheese, spinach, and a dash of hot sauce for a little sass.
Prep Time: 10 minutes
Cook Time: 45 minutes
Total Time: 55 minutes
Servings: 6

Ingredients 

  • 5 Slices bacon, diced
  • 1 yellow onion, diced
  • 8 eggs, large
  • 3 Tablespoons milk
  • 1 Teaspoon salt
  • ½ Teaspoon black pepper
  • ¼ Teaspoon ground nutmeg
  • ¼ Cup baby spinach, chopped
  • 1 Teaspoon hot sauce, optional
  • 4 Cups hashbrowns, thawed
  • 12 Ounces Swiss cheese, shredded
  • chives, chopped, for optional garnish

Instructions 

  • Preheat oven to 350 degrees F. Grease a 9 x 13-inch baking dish and set aside.
  • Cook bacon in a skillet over medium heat for 5 minutes.
  • Add onions and cook until translucent and the bacon is crispy. Remove from heat and set aside.
  • Whisk together the eggs, milk, salt, pepper, nutmeg, spinach, and hot sauce in a large bowl.
  • Add hash browns, cheese, bacon, and onions. Mix until combined.
  • Pour mixture into prepared baking dish and bake for 40 to 45 minutes, or until the center is set.
  • Garnish with chives and serve.

Notes

Thaw and drain hash browns: Make sure the frozen hashbrowns are fully thawed and well-drained to prevent excess moisture, which can make the easy breakfast casserole soggy.
Cook bacon and onions properly: Cook until it is crispy and the onions are translucent. This step adds flavor and texture to the casserole.
Check for doneness: Bake until the center is set. You can check this by inserting a knife or toothpick into the center; it should come out clean when done.
Let it rest: Allow the casserole to rest for a few minutes after baking. This helps it set further and makes it easier to slice and serve.

Nutrition

Calories: 442kcal | Carbohydrates: 28g | Protein: 26g | Fat: 25g | Saturated Fat: 13g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 7g | Trans Fat: 0.02g | Cholesterol: 273mg | Sodium: 630mg | Potassium: 569mg | Fiber: 2g | Sugar: 1g | Vitamin A: 919IU | Vitamin C: 14mg | Calcium: 567mg | Iron: 3mg
Like this recipe? Rate and comment below!

Make a hash brown casserole recipe that has all the goods: bacon, cheese, spinach, and hot sauce! This is one of the best breakfast casserole recipes ever if you want to make hashbrown breakfast casserole for the family.

Serve this bacon or sausage breakfast casserole hot for breakfast, brunch, or lunch with a salad and your favorite pickles. This easy make-ahead recipe is ideal for holiday menu planning, so remember to add it to your list!

Other Breakfast Recipes to Try

Bella Bucchiotti

Bella Bucchiotti is a Canadian-based syndicated food, travel, and lifestyle writer, photographer, and creator at xoxoBella. She founded xoxoBella in 2015, where she shares her love for food, dogs, sustainability, fitness, crafts, outdoor adventures, travel, and philanthropy to encourage others to run the extra mile, try new recipes, visit unfamiliar places, and stand for a cause. Bella creates stress-free and family-friendly recipes for weeknight dinners and festive feasts.

 

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