A Hashbrown Breakfast Casserole is perfect when you need to feed a crowd first thing in the morning.

This breakfast casserole recipe is a full meal with eggs, sausage, peppers, and hashbrowns all topped with cheese and baked until perfect golden brown.

Best of all, prepare ahead of time and in the morning, just pop it into the oven. Serve with a fresh fruit salad, and keep the coffee coming (or mimosas)!

hashbrown breakfast casserole cut in a baking pan

Ingredients in Breakfast Casserole

Hashbrowns – I use shredded hashbrowns, but any style of hash browns work well in this recipe, or even leftover home fries or roasted potatoes!

Sausage – I prefer pork sausage (like Jimmy Dean’s breakfast sausage). Swap it out for turkey sausage, ham, or crispy bacon (or even leftover ground beef from last night’s tacos)!

Veggies – I add bell peppers to this casserole but add whatever veggies you have on hand. Mushrooms (cook them first so they don’t get watery), asparagus, or even steamed broccoli are great.

Cheese – Shredded sharp cheddar cheese is our favorite, but pepper jack cheese or other bold flavorful cheeses work well. Save a little for the top to get a nice golden layer of cheese.

This hash brown casserole recipe is very forgiving; you can change the add-ins according to your preferences or what you have on hand. Try leftover meats, veggies, and cheeses of all kinds. Just chop or shred and toss them into the mix.

ingredients in bowls to make Hashbrown Breakfast Casserole

How to Make Breakfast Casserole

Frozen hash browns make this breakfast casserole super easy to whip up.

  1. Spread thawed shredded hash browns in the bottom of a baking dish per the recipe below. Mix in cheese, sausage, and pepper/onions.
  2. Whisk eggs, milk, and seasonings in a large bowl.
  3. Pour over the hashbrown mixture.

Bake Now or Make Ahead

The great thing about this hash brown breakfast casserole recipe is that it can be baked right away or prepared ahead and baked before brunch. It’s perfect for holidays like Christmas morning or even Easter.

Cook it now or refrigerate overnight Once prepared, bake right away or you can cover, refrigerate overnight, and bake this breakfast casserole fresh in the morning.

To Bake Now Pour the egg mixture over top and bake. Unlike strata or french toast, you do not need to wait as there is no bread to soak up the mixture. So just make and bake.

To Bake Later Cover the mixture tightly and refrigerate for up to 48 hours (or 3 days if using pasteurized egg product). Remove from the fridge at least 30 minutes before baking (while preheating the oven).

How long to bake breakfast casserole?

This bakes at 350°F for 55-65 minutes or until a knife inserted in the center comes out clean. If you’ve let it sit overnight, it may need a few extra minutes if it’s still quite chilled from the fridge.

Can this be cooked in the Crock Pot?

To prepare in the Crock Pot, I recommend our slow cooker breakfast casserole.

How to store leftovers?

Just like egg muffins, leftover breakfast casserole is perfect for busy weekday mornings. Keep leftovers in the fridge for 3-4 days. Reheat in the microwave or the oven.

Can you freeze breakfast casserole?

Yes, you sure can! This will last in the freezer for up to four months. Wrap individual pieces and store in freezer bags. Defrost in the fridge overnight and reheat in the microwave or the oven.

dish of Hashbrown Breakfast Casserole

More Easy Make-Ahead Breakfast Casseroles

If you’re tired of the same old breakfast or want a meal to prep ahead, you’ll love these breakfast casserole recipes. They’re perfect for reheating throughout the week or for a special holiday breakfast and best of all, they’re all prepped ahead of time.

close up of Hashbrown Breakfast Casserole
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Hashbrown Breakfast Casserole

Hashbrown Breakfast Casserole is a complete meal in one dish. Eggs, hash browns, sausage, and loads of cheddar cheese make the perfect meal!
Prep Time 20 minutes
Cook Time 1 hour 10 minutes
Total Time 1 hour 30 minutes
Servings 8 servings
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Ingredients  

  • 20 ounces shredded hash browns thawed
  • 1 pound sausage cooked, crumbled, and drained
  • ¼ cup onion finely diced
  • ½ red bell pepper diced
  • ½ green bell pepper diced
  • 2 cups cheddar cheese shredded, divided use
  • 8 eggs
  • 1 can evaporated milk 12 ounces, or 1 ⅓ cups milk
  • ½ teaspoon Italian seasoning or your favorite herbs/spices (optional)
  • ½ teaspoon Kosher salt or to taste
  • ¼ teaspoon black pepper

Instructions 

  • Preheat the oven to 350°F (if baking immediately). Grease a 9×13 inch pan or a 3qt baking dish or spray with cooking spray.
  • Heat a large skillet over medium high heat. Brown the sausage, breaking it up with a spoon, until no pink remains. Drain fat.
  • In the prepared dish, add the hashbrowns, cooked sausage, onions, bell peppers, and 1 ½ cups of cheese. Gently mix the ingredients together and spread evenly in the pan.
  • In a large bowl, add the eggs, evaporated milk, salt & pepper, and Italian seasoning to a large bowl. Whisk until well combined.
  • Pour the egg mixture over the hashbrown mixture and sprinkle the remaining cheese over top.
  • Cover the dish with foil and refrigerate overnight if desired, or bake immediately.
  • Bake uncovered for 55-65 minutes or until cooked through.

Video

Notes

  • The casserole can be assembled and baked immediately or covered and refrigerated for up to two days before baking. If using pasteurized egg product, it can be prepared three days in advance.
  • Sausage can be swapped for 1lb of bacon, cooked crisp. You can use any type of shredded cheese you have on hand.
  • If the casserole is refrigerated overnight, remove it from the fridge 30 minutes before baking. It may require an extra 10-15 minutes of cooking time.
  • Evaporated milk can be substituted with 1 1/3 cups of light cream, milk, or non-dairy milk of your choice. 
4.98 from 2982 votes

Nutrition Information

Calories: 474 | Carbohydrates: 19g | Protein: 25g | Fat: 33g | Saturated Fat: 14g | Polyunsaturated Fat: 4g | Monounsaturated Fat: 11g | Trans Fat: 0.1g | Cholesterol: 246mg | Sodium: 816mg | Potassium: 598mg | Fiber: 1g | Sugar: 5g | Vitamin A: 932IU | Vitamin C: 23mg | Calcium: 357mg | Iron: 2mg

Nutrition information provided is an estimate and will vary based on cooking methods and brands of ingredients used.

Course Breakfast, Casserole
Cuisine American
Hashbrown Breakfast Casserole with a title
sliced Hashbrown Breakfast Casserole in the dish with writing
baked Hashbrown Breakfast Casserole in the dish with writing
ingredients in a dish to make Hashbrown Breakfast Casserole and photo of cooked dish with writing

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About the author

Holly is a wine and cheese lover, recipe creator, shopping enthusiast and self appointed foodie. Her greatest passion is creating in the kitchen and making deliciously comforting recipes for the everyday home cook!
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Comments

    1. There are a few ways to make sure it is cooked through. You can check the internal temperature at the center of the dish is 160°F. You can also insert a knife or toothpick into the center of the casserole, if it comes out without wet egg mixture on it then it’s ready. It should also be golden brown on top, and the edges should be slightly pulled away from the sides of the baking dish. The eggs should be set and not jiggly. I hope this helps!

  1. I’ve made this casserole so many times… it’s always a hit! I had an idea and wondered if you think it would be possible. Can the same recipe be made and cooked in muffin tins rather than a casserole dish? If so, what cook time/temperature would you recommend?

    Thanks again for all of your amazing meal ideas!

    1. Ooo, I love that idea, Julie! I haven’t tried but I think that it should work. I would love to hear how it turns out for you.

    2. I was just thinking of baking this on a cookie sheet, cutting the cooked casserole into 12 squares/rectangles, and adding it to croissants and extra cheese for make ahead breakfast sandwiches! I’m guessing 325* for 20 or so minutes..

  2. This was SO GOOD! I didn’t change anything and we gobbled it up. Oddly enough, I served it as a dinner dish and would certainly do that again. Thanks Holly!5 stars

  3. Love this casserole. So good. Make it for supper and then leftovers for lunch next day.
    Thank you.5 stars