Crockpot Pierogi Casserole with Kielbasa

The first thing I notice when I lift the slow-cooker lid is how much the pierogies have softened around their potato-and-cheese centers. The kielbasa has shared its savory flavor with the broth, and the whole pot is ready for the part that turns it into a casserole: the creamy cheese finish. This Crockpot Pierogi Casserole with Kielbasa is built for a hands-off stretch of cooking, with frozen pierogies going straight into the slow cooker instead of needing a separate pot of boiling water.

I like that the cheese goes in only after the pierogies are tender. The cream cheese and sharp cheddar need just a short covered cook to melt, then a stir brings the broth and cheese together into a smooth sauce. Keep the lid on during the first cook so the slow cooker holds its heat, and you’ll have tender pierogies with kielbasa tucked between them and a creamy sauce clinging to each bite.

Why the Cheese Waits Until the Pierogies Are Tender

It’s easy to think the cheese should go in with everything else, but this casserole has two different jobs happening at two different times. First, the frozen pierogies need the covered cook in broth to become tender. The cream cheese and cheddar are the finishing ingredients; they melt into the liquid after that first cook rather than spending the entire slow-cooking window in the pot.

That order also gives you a clear cue for each stage. Check the pierogies for tenderness and the center for at least 165°F before stirring in the cheeses. Then cover the slow cooker again while they melt. Once you stir, the sauce should look creamy instead of showing separate pieces of cream cheese and cheddar. If the pierogies aren’t tender yet, give them more time in the first stage rather than adding the cheese early and hoping both parts finish together.

There’s no separate sauce to make or extra pan to wash. The broth already in the slow cooker becomes the base for the cheese finish, and stirring at the end brings it all together.

What the Pierogies, Kielbasa, and Cheeses Each Bring

• Frozen potato-and-cheese pierogies — They provide the tender dumpling layers and the potato-and-cheese filling. Add them frozen, as the timing is designed around them going straight into the slow cooker. Choose a package that stays frozen until you’re ready to cook; there’s no need to thaw first.
• Kielbasa — Fully cooked kielbasa brings the meaty, savory bites. Slice it into even rounds so they’re easy to portion alongside the pierogies. Since it’s fully cooked, this method warms it while the pierogies cook rather than asking it to cook through from raw.
• Low-sodium chicken broth — The broth adds moisture for the covered cook and forms the base of the finished sauce. Low-sodium broth keeps the dish from getting saltier than intended alongside the seasoned kielbasa and cheeses. Regular broth will make the finished casserole taste saltier.
• Cream cheese — This is what gives the sauce its creamy body. Softening it and cutting it into cubes helps it melt more evenly during the short finishing stage; a cold, uncut block is more likely to leave lumps.
• Sharp cheddar — Sharp cheddar contributes a more pronounced cheese flavor than a mild cheddar would. Shredded cheese is ready to stir in, and sharpness is worth choosing by taste here because it stands out in the simple sauce.
• Nonstick cooking spray — A light coating helps keep the cheese sauce and pierogies from sticking to the slow cooker’s sides. Use it to coat the inside before adding the other ingredients.

How to Cook the Pierogies Before Building the Cheese Sauce

Coat the Slow Cooker and Add the Frozen Pierogies

Lightly coat the inside of a 6-quart slow cooker with nonstick cooking spray. Add the frozen pierogies and the sliced kielbasa, then pour the chicken broth evenly over them. Spreading the broth across the pot gives the ingredients moisture throughout the covered cook. Keep the pierogies frozen when they go in so they cook on the intended timing.

Cook Until the Pierogies Are Tender

Cover and cook on LOW for 3 to 4 hours or on HIGH for 2 to 2 1/2 hours. The pierogies should be tender, not firm in the middle, and the center of the casserole needs to reach at least 165°F. Slow cookers can vary, so use tenderness and the center temperature as your cues rather than relying only on the earliest time. Keep the lid closed while they cook.

Add the Cream Cheese and Cheddar

Once the pierogies are tender, stir in the softened, cubed cream cheese and the shredded sharp cheddar. Cover the slow cooker and cook on HIGH for 15 to 20 minutes. The cheeses should be melted before you stir the casserole smooth. If you still see distinct pieces of cheese, keep the lid on and let them melt for the remainder of that finishing window.

Stir Until the Sauce Looks Creamy

Stir through the casserole until the melted cheeses and broth form a creamy sauce around the pierogies and kielbasa. Move the spoon gently so the tender pierogies hold their shape. The finished sauce should coat the ingredients rather than sit as unmixed cheese in one spot. Serve it while the sauce is warm and creamy.

Two Small Changes That Shift the Casserole

Questions That Come Up While Making This Pierogi Casserole

Crockpot Pierogi Casserole with Kielbasa

Crockpot pierogi casserole with kielbasa cooks frozen potato-and-cheese pierogies and sliced kielbasa in a 6-quart slow cooker. Cream cheese and sharp cheddar melt into a creamy sauce for a hearty, hands-off dinner.

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Prep Time 5 minutes mins

Cook Time 4 hours hrs 20 minutes mins

Total Time 4 hours hrs 25 minutes mins

Servings: 6 servings

Course: Dinner

Cuisine: Polish-American

Calories: 775

Ingredients Equipment Method Notes

Ingredients

  

• 1 tbsp nonstick cooking spray
• 2 package (16 oz) frozen potato-and-cheese pierogies
• 1 package (14 oz) fully cooked kielbasa sliced into 1/4-inch rounds
• 1.5 cups low-sodium chicken broth
• 1 package (8 oz) cream cheese softened and cut into cubes
• 1 cup shredded sharp cheddar cheese

Equipment

• 1 6-quart slow cooker

Method

 

1. Lightly coat the inside of a 6-quart slow cooker with nonstick cooking spray.
2. Add the frozen pierogies and sliced kielbasa to the slow cooker.
3. Pour the chicken broth evenly over them.
4. Cover and cook on LOW for 3 to 4 hours or HIGH for 2 to 2 1/2 hours, until the pierogies are tender and the center is at least 165°F.
5. Stir in the cream cheese and cheddar.
6. Cover and cook on HIGH for 15 to 20 minutes, until the cheeses have melted.
7. Stir until the sauce is creamy.

Notes

For the creamiest sauce, stir well after the cheeses melt. Refrigerate leftovers for up to 3 days; freezing is not recommended because the cream cheese sauce may separate. For a lactose-free option, use lactose-free cream cheese and cheddar.