Slow Cooker Sausage and Potato Casserole: 5 Easy Steps

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Let’s be honest—some nights, just getting dinner on the table feels like a Herculean task. If your to-do list is longer than your toddler’s bedtime excuses (been there), this Slow Cooker Sausage and Potato Casserole is your new best friend. Cheesy, hearty, and comforting, it practically makes itself while you tackle your day.

This recipe is one of those magic meals that takes minimal prep but delivers maximum flavor. Plus, it’s family-friendly, budget-conscious, and pairs perfectly with whatever’s already in your fridge. And the best part? Your house will smell like a warm hug by dinnertime.

Why You’ll Love This Slow Cooker Sausage and Potato Casserole

Picture this: creamy hash browns, melty cheddar, savory kielbasa, and a hint of smoky seasoning all slow-cooked into a bubbling casserole of comfort. It’s the kind of meal that warms you up from the inside out.

This casserole checks all the boxes:

One-pot wonder
Set-it-and-forget-it convenience
Perfect for picky eaters
Freezer and leftover friendly

If you’re looking to save your sanity and still serve up something delicious, this casserole is your weeknight lifesaver.

Ingredients You’ll Need

1 (32 oz.) bag of hash browns (or substitute with fresh diced potatoes)
14 oz. kielbasa sausage, cut into small pieces
1 small onion, diced
2 ½ cups shredded cheddar cheese
1 (10.5 oz.) can cream of mushroom soup
½ cup sour cream
1 tsp Creole seasoning (or your favorite blend)
Salt and pepper to taste

How to Make Slow Cooker Sausage and Potato Casserole

Layer the Love: In a greased slow cooker, combine the hash browns, kielbasa, diced onion, and 2 cups of cheddar cheese. Tip: If you’re feeling fancy, you can sauté the sausage and onions beforehand for a little extra depth of flavor, but it’s totally optional.
Mix the Creamy Magic: In a separate bowl, mix together the cream of mushroom soup, sour cream, Creole seasoning, salt, and pepper.
Stir and Set: Pour the creamy mixture over the potato and sausage mix. Stir it all together until well combined.
Top It Off: Sprinkle the remaining ½ cup of cheddar cheese on top. Because more cheese = more joy.
Let It Cook: Cover and cook on low for 6 hours or high for 4 hours. It’s done when the potatoes are tender and the onions are fully cooked through. Warning: Try not to overcook it—mushy potatoes are only fun in mashed form!

Tips for Casserole Success

Fresh vs. Frozen: Fresh diced potatoes are totally fine, just plan to add about 30-60 minutes of extra cooking time.
Season Smart: Kielbasa brings salt, so taste before adding extra.
Add Veggies: Toss in some chopped bell peppers, spinach, or broccoli if you want to sneak in some greens.
Make It Spicy: Swap the kielbasa for a spicy sausage and add a dash of hot sauce for a little kick.

Real-Life Saver

I first made this when my youngest was going through her “I only eat beige foods” phase. I needed something hearty, cheesy, and tantrum-proof. This casserole not only passed the toddler test but became a regular on our rotation. Bonus: It reheats like a dream for lunch leftovers.

Close-up of Slow Cooker Sausage and Potato Casserole in a white bowl, filled with cheesy potatoes and sliced kielbasa. — Slow Cooker Sausage and Potato Casserole loaded with melty cheddar, tender potatoes, and savory sausage—your next cozy dinner favorite!

FAQs About Slow Cooker Sausage and Potato Casserole

Can I substitute the cream of mushroom soup?

Absolutely. Cream of chicken or even a homemade white sauce works great.

Can I prep this the night before?

Yes! Assemble everything in your slow cooker insert and refrigerate. Just pop it into the base and start cooking the next day.

How do I store leftovers?

Store in an airtight container in the fridge for up to 4 days. Reheat in the microwave or oven. It even freezes well!

What if I don’t have Creole seasoning?

No worries. A mix of paprika, garlic powder, onion powder, and a dash of cayenne works great.

Dinner Made Simple (and Delicious)

There you have it—your new weeknight hero. This Slow Cooker Sausage and Potato Casserole is more than a meal; it’s a comforting escape from the chaos of daily life. Whether you’re feeding a crowd or just need a low-effort dinner with leftovers for tomorrow, this dish delivers.

It’s perfect for chilly evenings, meal prepping for the week, or just those times when you need something warm and filling without all the fuss. Trust me, once it hits your slow cooker rotation, there’s no turning back. Go ahead—give it a try and enjoy the kind of mealtime magic that makes life just a little bit easier (and a whole lot tastier).

More Recipes to Try Next

If you loved this hearty casserole, here are some more comforting and easy slow cooker meals to add to your weekly rotation:

Craving something cozy and kid-friendly for breakfast? Don’t miss our creamy and cinnamon-spiced Crock Pot Cinnamon Roll Casserole.
For another savory dish that’s full of cheesy goodness, check out the rich and satisfying Slow Cooker Steak and Cheddar Potato Casserole.
If you’re in the mood for something with bold Tex-Mex flair, try our zesty Slow Cooker Chicken Burrito Bowl—great for meal prep!
Or go for a rustic and comforting dinner with our homestyle Slow Cooker Chicken Pot Pie that the whole family will love.

These delicious dishes will keep your slow cooker busy and your family full!