The Best Sausage Casserole Recipe | Takes Just 10 Minutes Of Prep Work

This sausage casserole is loaded with tons of flavor. It combines seasoned breakfast sausage, sharp cheddar cheese, hash browns, bell peppers, and onions, and it's just so, so good. Plus, this breakfast casserole works equally well for breakfast, lunch, and dinner!

The Best Sausage Casserole

If breakfast is your favorite meal of the day, you will love this sausage casserole. From the seasoned sausage to the hearty hash browns, this casserole recipe is perfect from the first bite to the last.

Not to mention, this casserole works equally as well for breakfast or brunch as it does for dinner. You can even assemble it at night and toss it in the oven right before breakfast the next morning!

By the way, if you're making this for brunch (which you totally should), then I highly recommend serving it up alongside this Starbucks cafe mocha recipe. After all, you'll have plenty of time to make it while your casserole is in the oven.

Why This Recipe Works

It's easy to make. All you have to do is cook the sausage with the peppers and onions, mix the filling ingreidents, then assemble the casserole and bake. It's effortless!

Super customizable. You can change up this sausage breakfast casserole in a number of ways, and however you make it, it'll be delicious.

Kids and adults love it. This casserole is a Duff family favorite, and it's become a staple for holidays and get-togethers. So I have a feeling your family will love it too!

Ingredients

The ingredient list is pretty straightforward, and you have tons of room to modify things depending on the flavor you're after. Honestly, one quick trip to the grocery store is all you need to make this easy sausage and potato casserole!

Anyway, here's exactly what you'll need to make this sausage breakfast casserole:

• ½ lb. breakfast sausage (I used spicy sausage)
• ¼ cup chopped red bell pepper
• ¼ cup chopped yellow bell pepper
• ¼ cup chopped onions
• Salt and pepper, to taste
• 10oz. hashbrowns, fresh or frozen, chopped
• 6 eggs
• ¼ cup heavy cream
• ¼ cup milk
• 1 ¼ cups shredded cheddar cheese
• Fresh parsley, chopped, for garnish

See, that's not so bad, right?

By the way, if you have all - or most - of these ingredients, then you already have everything you need to make this chicken hashbrown casserole as well.

And if you have extra sausage and cheese, you can put it to good use by making my overnight egg casserole, this sausage cream cheese casserole, my famous cream cheese sausage balls, or this biscuits and gravy casserole next!

How To Make Sausage Casserole

1. Prep: Preheat oven to 375°F. Remove the sausage casing. Heat a large skillet with oil over medium-high heat.

2. Cook the sausage and veggies: Add the sausage to the hot oil and cook sausage until browned. Break into sausage crumbles as it cooks. Add the bell peppers and onions and cook, stirring frequently, for 5 minutes. Transfer the cooked sausage and veggies into an 8x8 casserole dish.

3. Make the filling: Beat the eggs with milk and heavy cream in a bowl. Season to taste with salt and pepper and stir in the cheddar cheese.

4. Assemble and bake: Pour the egg mixture over the sausage mixture. Add the hash browns. Stir gently to combine everything together. Bake the casserole for 45 minutes.

5. Serve: Cool the sausage breakfast casserole on a wire rack briefly before slicing. Garnish the casserole with some chopped parsley and serve warm. 

Tips To Make The Best Recipe

• Cook the sausage and veggies the night before to save time.
• Use Italian sausage, spicy sausage, maple sausage, chicken sausage, pork sausage, or turkey sausage.
• Add more veggies like broccoli, kale, diced tomatoes, cauliflower, and spinach. 
• Swap the cheddar with pepper jack cheese and add some cayenne pepper to the egg mix for a spicy breakfast casserole. 
• Serve the egg casserole with sausage topped with sliced avocado, sour cream, salsa, or even this McDonald's breakfast sauce.

How To Store Sausage Casserole

In the fridge: Put a lid on the casserole dish or transfer the leftover breakfast casserole to an airtight container. Stored this way, it'll last in the fridge for up to 4 days. 

In the freezer: If you want to make it ahead of time and have it on hand for longer, you can freeze the cooked casserole in an airtight container or freezer-safe dish for up to 6 months.

Reheating: Put the casserole back in a casserole dish and warm it in the oven at 350°F for about 10-12 minutes or until it reaches your desired temperature. For reheating the frozen casserole, simply cover the baking dish with aluminum foil and heat at 350°F in the oven for about 20 minutes or until it's warmed through.

FAQS About This Sausage Breakfast Casserole Recipe

Can I make this casserole ahead of time?

Yes! You can make the casserole and assemble it before baking. Put a lid on the casserole dish or wrap it tightly in plastic wrap and keep it in the fridge overnight. Then bake when you're ready to serve. 

Why is my breakfast casserole soggy?

The main reason is that you did not drain the sausage grease before adding it to the casserole. You'll also want to make sure the veggies are completely cooked to get rid of the excess moisture.

Can you use pre-cooked sausage for this recipe?

Yes, using pre-cooked sausage will make the prep work much quicker. Just make sure to cook the veggies, too, before assembling the casserole.

More Casserole Recipes

If you liked this easy recipe, we have a ton of other casseroles on the blog that is just as easy to make!

Here are some of our most popular casserole recipes:

• Chicken pot pie casserole
• Cheeseburger casserole
• Carrot casserole
• Pineapple casserole
• Philly cheesesteak casserole
• Ground turkey casserole
• Crack chicken casserole

And, as always, don't forget to follow us on YouTube, Instagram, and TikTok, for more easy recipes.