Drop frozen pierogi into the slow cooker with a few extras and it turns into pure comfort.

There are nights when I walk in the door after work, drop my bag, and immediately regret not planning dinner. That’s exactly how this 4-Ingredient Slow Cooker Pierogi Casserole was born—a cozy, carb-y hug in a crockpot that basically cooks itself. Pierogi, which come from Central and Eastern Europe (you’ll see them a lot in Polish, Ukrainian, and Russian cooking), are traditionally little dumplings stuffed with potato, cheese, or meat. Instead of boiling and frying them like you might on a Sunday afternoon, this version leans all the way into weeknight convenience: toss in frozen pierogi, a creamy sauce, some smoky kielbasa, and cheese, then let the slow cooker do the work. It’s the kind of dish you make when you want comfort food with minimal effort, something that tastes like it took all day without you actually being in the kitchen all day.

This pierogi casserole is pretty rich and hearty, so I like to balance it with something fresh and crunchy on the side. A simple green salad with a tangy vinaigrette cuts through the creaminess really nicely—think mixed greens, cucumbers, and maybe some sliced red onion. Steamed or roasted veggies like broccoli, green beans, or Brussels sprouts also work well and can roast in the oven while the slow cooker finishes up. If you’re feeding a crowd, you can add a side of applesauce or a quick cabbage slaw for a nod to traditional Eastern European flavors. And if you’re really leaning into comfort food mode, serve it with warm crusty bread or dinner rolls to soak up any extra sauce.

Servings: 6 servings

2 (16–20 oz) bags frozen potato and cheese pierogi

Spray the inside of your slow cooker with nonstick cooking spray or lightly grease it with butter or oil to help prevent sticking.

Place half of the frozen pierogi in an even layer on the bottom of the slow cooker. It’s okay if they overlap a bit.

Scatter half of the sliced kielbasa over the pierogi, then sprinkle with 1 cup of the shredded cheese.

Repeat the layers with the remaining pierogi, kielbasa, and the last 1 cup of shredded cheese.

Pour the heavy cream or half-and-half evenly over the top, trying to cover as much of the pierogi and cheese as possible. Don’t stir; the liquid will work its way through as it cooks.

Cover and cook on LOW for 3–4 hours, or until the pierogi are tender and heated through, the cheese is melted, and the sauce is bubbly around the edges. (Avoid lifting the lid too often so you don’t lose heat.)

Once done, gently stir from the edges toward the center to coat the pierogi in the creamy sauce without breaking them up too much.

Let the casserole sit for about 5–10 minutes with the lid off to thicken slightly, then serve warm straight from the slow cooker.