Looking for a really delicious breakfast idea? This cheesy hash brown sausage breakfast casserole is full of flavor but totally easy to make.

cheesy hash brown sausage breakfast casserole in glass baking dish

Creating This Sausage Breakfast Casserole Recipe

I’ve had plenty of savory breakfast casseroles, but I’ve rarely had one that I can’t wait to get the recipe for. It seems like it’s often bland or way too eggy.

We have an absolutely delicious recipe for a Southern Breakfast Sausage Cake with, wait for it, a maple butter sauce that has changed me on savory breakfasts forever. It is slam packed full of flavor and something I’m not craving. It’s exclusive to our new cookbook, Our Sweet Basil Kitchen!! It’s on sale for the holidays, so hurry and snag a copy before prices move back up!

Anyway, that recipe set us out to discover more savory breakfasts that would be worth making, and after a little event at our church we both decided to make a good hash brown casserole.

serving up a portion of cheesy hash brown sausage breakfast casserole

Sausage Breakfast Casserole Ingredients

This sausage hashbrown breakfast casserole starts off with good sausage. This is the most important part as the sausage will breath flavor into the entire dish. We like to use a medium or maple sage sausage, but of course, use whatever you like. You could throw in diced green chiles and peppers too, but we will leave that for another time.

The hash browns are totally frozen, but if you feel ambitious go ahead and shred your own. Now, we do cook them a little but that’s because we noticed that not crisping the potatoes or adding them to the hash brown egg casserole while still frozen led to a soggier casserole.

In addition to these two key ingredients, we also added: 

  • Diced onion
  • Milk
  • Shredded cheese
  • Eggs 

We wanted to keep things simple without compromising on the flavor, and we did just that! 

cheesy hash brown sausage breakfast casserole in square glass baking dish

How to Make Sausage Breakfast Casserole

This egg bake with hash browns couldn’t be simpler to make. Here are the basic steps for making this easy breakfast casserole: 

  1. Whisk together the eggs, salt, pepper, and milk. 
  2. Brown the sausage in a skillet, then cook the onion alongside the meat. 
  3. Remove the sausage and onion from the skillet, then add in the hash browns (you want them to crisp up a bit). 
  4. Place the hash browns in the bottom of a greased 8×8-inch baking dish. 
  5. Top with the sausage mixture and half of the shredded cheese. 
  6. Pour egg mixture over that, then top with the rest of the cheese. 
  7. Bake until set and golden brown. 

portion of cheesy hash brown sausage breakfast casserole on gray plate

Can You Freeze Sausage Breakfast Casserole?

Yes, you can freeze this easy hash brown casserole either before you bake it or after it has come out of the oven and cooled. A properly frozen sausage breakfast casserole will keep for up to three months.

Can Breakfast Casserole be Made the Night Before?

Yes, you can prep this sausage breakfast casserole the night before, making it the ultimate lazy morning meal. Prep it, wrap it tightly in plastic wrap, and refrigerate it overnight and then pop it into the oven. Unbaked hash brown breakfast casserole will keep for a few days if covered well in the fridge, but the potatoes do break down a little more each day so just be mindful of that.

Can I Double This Recipe? 

Very easily, yes. You’d need to bake this sausage hash brown casserole in a 9×13-inch baking dish, and the cook time may need to be adjusted slightly. You’ll know it’s done baking when it’s set and golden on top! 

sausage hashbrown breakfast casserole in square glass baking dish

Tips for Making Sausage Breakfast Casserole

For this sausage egg hash brown casserole, we used a blend of mozzarella and sharp cheddar cheese. We picked mozzarella for the gooey factor and sharp cheddar for the flavor. However, you could use pepper jack, colby jack, or any other combination of cheeses you like. This is a versatile sausage breakfast casserole recipe, so have fun with it! 

A few readers have asked about adding extra veggies (like chopped bell peppers) to the sausage mixture. We think that’s a great idea! Just cook the veggies alongside the onions and sausage — no need to change the recipe more than that. 

And lastly, if you’re shredding fresh potatoes to make your own hash browns, note that you will still need to cook the potatoes in the skillet first before transferring them to the baking dish. You want those hash browns to be nice and crispy, otherwise they’ll turn to mush in this sausage breakfast casserole. 

More Easy Breakfast Recipes: 

Cheesy Hash Brown Sausage Breakfast Casserole

4.15 from 77 votes
Servings: 6
Prep Time: 10 minutes
Cook Time: 45 minutes
Total Time: 55 minutes

Description

Looking for a really delicious breakfast idea? This cheesy hash brown sausage breakfast casserole is full of flavor but totally easy to make.

Ingredients 

  • 1 Pound Maple Sage Breakfast Sausage, (or any other flavor)
  • 1/4 Cup Onion, , minced
  • 1 Bag Shredded Hash Browns, 15oz
  • 1/2 Teaspoon Salt
  • Pinch Pepper
  • 4 Large Eggs, , whisked
  • 1 Cup Milk
  • 1 Cup Shredded Sharp Cheddar Cheese
  • 1 Cup Shredded Mozzarella Cheese

Instructions

  • Preheat the oven to 350 degrees F.
  • Whisk together eggs, salt, pepper, and milk.
  • Set aside to allow the salt to break down the egg, creating a fluffier baked egg dish.
  • Spray an 8x8-inch baking dish with nonstick spray.
  • In a large skillet, cook sausage until almost all of the pink is gone.
  • Add the onion and finish cooking the meat, stirring occasionally.
  • Using a slotted spoon, remove the meat and onions to a plate.
  • Add hash browns to skillet and cook until lightly brown, flip and cook on the other side, adding a drizzle of oil if needed.
  • Place hash browns in bottom of lightly greased square pan. Top with sausage and 1/2 of each cheese.
  • Pour egg mixture over hash brown mixture and sprinkle with remaining cheese.
  • Sprinkle a little fresh cracked pepper over the top and bake for 35-40 minutes or until set and golden.

Notes

This dish can be prepped ahead. Once assembled, place foil over the dish and refrigerate up to 12 hours. Remove from the fridge for 15 minutes before baking.

Nutrition

Serving: 1cupCalories: 478kcalCarbohydrates: 13gProtein: 26gFat: 35gSaturated Fat: 15gPolyunsaturated Fat: 4gMonounsaturated Fat: 13gTrans Fat: 1gCholesterol: 202mgSodium: 980mgPotassium: 486mgFiber: 1gSugar: 3gVitamin A: 596IUVitamin C: 6mgCalcium: 307mgIron: 2mg
Author: Sweet Basil
Course: Over 200 Favorite Easy Breakfast Recipes

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Looking for a really delicious breakfast idea? This cheesy sausage hash brown breakfast casserole is full of flavor but totally easy to make.