Cheesy Kielbasa Hashbrown Casserole makes the perfect breakfast, lunch, or dinner. Loaded with delicious kielbasa sausage, potatoes, and, of course, cheese, it’s a hearty, one-pot meal that’s made in the slow cooker and always so delicious.

Closeup shot of cheesy kielbasa hashbrown casserole on plate

This delicious recipe is one that we make all year long. It’s great for fall and winter because it’s nice and hot, but it’s also a delicious spring and summer recipe thanks to the kielbasa sausage and potatoes. After all, potatoes are amazing any time of year.

We love making this cheesy kielbasa hash browns casserole for a delicious dinner, then eating the leftovers the next day for breakfast and lunch. It’s also a delicious dish to bring to potlucks and get-togethers. It’s easy to serve because everyone can simply spoon out as much as they want!

This is one of the easiest and most delicious casseroles you’ll ever make. It’s absolutely filled with delicious flavor but uses a few ingredients. It’s a no-nonsense, nothing-fancy dish that comes together super quickly and always tastes so good!

Tasty kielbasa sausage is combined with hash browns, onion, and cheddar cheese, then topped with cream of chicken soup and milk to create a rich, cheesy dish that is so hearty and filling. It’s a dish that sticks to your ribs and keeps you going all day or satisfies you for the evening.

With each and every bite, you’ll enjoy all the sausage, potato, and cheese goodness, and appreciate it because it didn’t take all day to make.

Closeup shot of cheesy kielbasa hashbrown casserole in slow cooker

Ingredients

It only takes a handful of ingredients to make this delicious casserole. They’re all readily available at your local grocery store, too. Stock up on the ingredients on your next trip to the store, or simply make a quick jaunt over when you need them. It’s that easy to find them all.

Fozen, cubed hashbrowns, thawed
Kielbasa, sliced and halved
White onion, finely diced
Salted butter, melted
Cheddar cheese, shredded
Cream of chicken soup
Milk

**See the recipe card at the end of the post for quantities and cooking times.

Instructions

Making this cheesy kielbasa hashbrowns casserole is even easier than the shopping list. There’s almost no work involved whatsoever. You’ll basically mix everything together, then let the slow cooker do the heavy lifting.

Step 1: Prep the Slow Cooker

Spray your slow cooker with non-stick cooking spray.

Step 2: Add the Solid Ingredients

Toss the hash browns, kielbasa, onion, and cheese together, then add to the slow cooker.

Overhead shot of casserole ingredients in slow cookier

Step 3: Mix the Wet Ingredients

In a medium bowl, whisk together the melted butter, cream of chicken, and milk until smooth.

Wire whisk mixing together ingredients in a glass mixing bowl

Step 4: Combien All Ingredients

Pour the cream of chicken mixture over the hashbrowns, kielbasa, onion, and cheese, stirring until combined. Sprinkle with cheddar cheese.

Pouring cream mixture from a bowl over casserole ingredients in slow cooker

Step 5: Cook

Cover the slow cooker and cook on high for three hours.

Hint: If you don’t have non-stick spray, you can wipe your slow cooker vessel down with olive oil.

PIN IT!!

Closeup shot of cheesy kielbasa hashbrown casserole in bowl

Variations

If you want to personalize this cheesy kielbasa hashbrown casserole or don’t have certain ingredients on hand, we have some variations here that will help.

Fresh Potatoes – If you don’t have frozen hash browns, you can simply cube fresh potatoes.

Onions – Any onion will do. If you have a sweet onion on hand, use it. Even red onions work.

Cream – If you don’t have milk, cream is an excellent alternative.

Make it Spicy – Try adding red pepper flakes for a kick of heat.

Cheese – Aside from cheddar cheese, Colby, Monterey Jack, and Colby Jack work very well in this recipe.

Creamed Soup – This recipe calls for cream of chicken soup, but you can also use cream of mushroom or celery.

Storage

This casserole will keep well in the refrigerator for three to four days. For long-term storage, you can freeze it for up to a month.

Tips

With a recipe this simple, it shouldn’t be a surprise that there aren’t many tips for it. We do have a couple that we think will help you, though.

A Sharp Knife – When dicing your onion, a sharp knife is your friend. Even cuts will help you get a nice dice, and a sharp knife makes for even cuts.

Shred Your Own Cheese – Of course, it’s faster to buy shredded cheese, but for the best flavor, shred your own using a cheese grater and a block of cheese.

More Casserole Recipes

If you like casserole, then you’ll love these recipes.

Unstuffed Shells Casserole

Overnight Croissant Breakfast Casserole

Low Carb Sausage, Mushroom, and Chicken Casserole

Closeup shot of cheesy kielbasa hashbrown casserole in blue bowl

FAQ

If you have questions about this cheesy kielbasa hash brown casserole, we’ve got answers!

How long will this last?
This casserole will last about 3 days in the refrigerator or 1 month in the freezer.

How do I freeze it?
Let the casserole cool completely in the refrigerator, then spoon it into an air-tight, freezer-safe container.

How do I reheat it?
Place the casserole in a baking dish and bake at 350 until hot. You can also place it back in the slow cooker in the morning and let it cook on low until heated through for later in the day.

What should I serve this with?
This is a complete meal in and of itself. We wouldn’t pair it with anything other than a side salad. You could top it with some sour cream, however.

What if I don’t have frozen hashbrowns?
Just cube up fresh potatoes!

Can I use any onion?
Any onion will work. Sweet onions are wonderful in this casserole. Even red onions will work, although they’re stronger.

Closeup shot of spoon sitting in cheesy kielbasa hashbrown casserole

If you’re ready for one of the easiest and most delicious casseroles you’ve ever made, bust out your slow cooker and start making this cheesy kielbasa hash brown casserole. It’s so delicious and so easy, there’s no reason not to make it.

Remember, you can print this recipe if you like!

MORE RECIPES YOU WILL LOVE:

Slow Cooker Kielbasa Potato Soup

Crock Pot Scalloped Potatoes and Ham

Creamy Ham and Potato Soup