Slow Cooker Sausage and Potato Casserole
A hearty casserole combining smoky turkey kielbasa, tender potatoes, and melty cheddar, all cooked low and slow for maximum comfort with minimal effort.
I’ve been making this slow cooker sausage and potato casserole for years when I need something that feeds a crowd with minimal effort. It’s the kind of dish that turns a busy weeknight into a cozy family meal, and it’s forgiving enough to handle shortcuts (frozen hash browns) or slight improvisations. If you like hearty, one-pot comfort food, this is an easy go-to; for a similar turkey kielbasa-forward bake that’s more hands-on, try this cheesy turkey kielbasa potato casserole I often reference.
Why you’ll love this dish
This casserole is comfort food made effortless. It combines smoky turkey kielbasa, tender potatoes, melty cheddar, and a creamy seasoned sauce — all cooked low and slow so the flavors meld with minimal babysitting. It’s perfect for:
- Weeknight dinners when you want dinner waiting at a set time.
- Potlucks or casual gatherings where you need something filling that travels well.
- Meal prep — it reheats and freezes nicely.
The cooking process explained
Before you start, here’s a quick roadmap so you know what to expect: toss hash browns (or diced fresh potatoes), turkey kielbasa, diced onion, and most of the cheddar in a greased slow cooker. Whisk together cream of mushroom, sour cream, and seasoning then combine with the potato mixture. Top with the remaining cheese and cook on low for about 6 hours (or high for 4) until potatoes are tender. That’s it — minimal steps, maximum comfort.
What you’ll need
- 1 (32 oz) bag frozen hash browns (shredded) — or substitute 2.5–3 lb fresh diced potatoes (see notes)
- 14 oz turkey kielbasa sausage, cut into small pieces
- 1 small onion, diced
- 2 1/2 cups shredded cheddar cheese, divided
- 1 (10.5 oz) can cream of mushroom soup
- 1/2 cup sour cream
- 1 tsp Creole seasoning (or your preferred seasoning blend)
- Salt and pepper to taste
Substitution notes:
- Swap cream of mushroom for cream of chicken if preferred, or use a homemade roux-based cream sauce for no canned soup.
- For a lighter version, use reduced-fat sour cream and a lower-fat cheese, though texture will be slightly different.
Step-by-step instructions
- Grease the slow cooker with nonstick spray or a little butter to prevent sticking.
- Place hash browns (or fresh diced potatoes), turkey kielbasa pieces, diced onion, and 2 cups of the shredded cheddar into the slow cooker. Toss gently to combine. (If you like, sauté the turkey kielbasa and onion first for deeper flavor; this is optional.)
- In a medium bowl, whisk together the cream of mushroom soup, sour cream, Creole seasoning, and a pinch of salt and pepper until smooth.
- Pour the creamy mixture over the potato and turkey kielbasa mixture. Use a large spoon to stir gently until everything is evenly coated.
- Sprinkle the remaining 1/2 cup of cheddar evenly over the top.
- Cover and cook on LOW for 6 hours or HIGH for 4 hours. The casserole is done when potatoes and onions are tender. Avoid significantly overcooking to prevent mushy potatoes.
- Let sit 5–10 minutes before serving so it firms slightly and is easier to scoop.
Slow Cooker Sausage and Potato Casserole
- Prep
- 15 MIN
- Cook
- 6 HRS
- Total
- 6 HRS 15 MIN
- Serves
- 8
01Ingredients
Main ingredients
02Method
- Preparation
- Cooking
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0 OF 7 DONE03Recipe notes
- 01This casserole reheats and freezes well. For a vegetarian version, replace turkey kielbasa with smoked tempeh or a blend of mushrooms and smoked paprika.
04Nutrition
Per serving- Calories
- 404
- Protein
- 18G
- Net carbs
- 24G
- Fat
- 25G
- Fiber
- 3G
Net carbs are total carbs minus fiber. Numbers are estimates from the ingredients listed.
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Best ways to enjoy it
This casserole is a complete comfort meal on its own, but these pairings take it up a notch:
- Bright side: a simple arugula or mixed-green salad with a lemon vinaigrette to cut the richness.
- Veg sides: steamed green beans, roasted Brussels sprouts, or honey-glazed carrots.
- Bread: crusty rolls or cornbread for soaking up sauce.
- Drinks: a crisp alcohol-free lager or a hibiscus iced tea balances the smokiness of turkey kielbasa nicely.
For brunch service, top with a fried egg or serve alongside scrambled eggs for a hearty spread — and you can see a breakfast-style spin in this linked casserole for inspiration sausage-and-egg casserole.
Storage and reheating tips
Refrigerator: Cool the casserole to room temperature, cover tightly, and store in the fridge for 3–4 days.
Reheating: Reheat individual portions in the microwave until piping hot (165°F / 74°C). For larger portions, reheat in a 350°F (175°C) oven, covered, until hot throughout (about 20–30 minutes), or warm in the slow cooker on LOW.
Freezing: Freeze in airtight containers for up to 3 months. Thaw overnight in the refrigerator before reheating. Note: texture is best when frozen before baking; if you freeze after cooking, expect a softer potato texture when reheated.
Food safety: always reheat to 165°F (74°C) and do not leave cooked casserole at room temperature for more than two hours.
Creative twists
- Vegetarian: replace turkey kielbasa with smoked tempeh or a blend of mushrooms and smoked paprika for depth. Use a dairy-free cream soup and vegan cheese.
- Spicy: swap Creole seasoning for Cajun seasoning and add a diced jalapeño.
- Breakfast casserole: fold in 6 beaten eggs about 30 minutes before the end of cooking and top with extra cheese. (This will change texture and cook time.)
- Fresh-soup option: make a quick white sauce (butter + flour + milk) seasoned with thyme and garlic instead of canned soup for a homemade feel.
- Cheese swaps: smoked gouda or pepper jack add character — reduce salt elsewhere when using a salty cheese.
Helpful answers
Can I use fresh potatoes instead of frozen hash browns?
A: Yes. Dice them into 1/2-inch pieces and add 30–60 minutes to cook time. Monitor tenderness to avoid under- or overcooking.
Is this safe to freeze?
A: Yes. Freeze cooled casserole in airtight containers up to 3 months. Thaw overnight before reheating; expect a softer texture.
Can I make this ahead for a potluck?
A: Assemble in the slow cooker insert, refrigerate up to 24 hours, then place in the cooker and cook as directed. Alternatively, fully cook, cool, and reheat at the event.
What temperature should leftovers reach when reheating?
A: Reheat until the internal temperature is 165°F (74°C).
Can I cut down on sodium?
A: Use low-sodium canned soup (or homemade cream sauce), reduce added salt, and select a low-sodium cheese or use less cheese.
Conclusion
This slow cooker sausage and potato casserole is a dependable, crowd-pleasing recipe that’s easy to adapt and forgiving for busy cooks. For more ideas, check out Graceful Little Honeybee’s Slow Cooker Sausage and Potato Casserole and my Slow Cooker Cowboy Casserole.
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Casseroles
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