Easy Baked Pierogi Casserole with Frozen Pierogies

Easy Baked Pierogi Casserole with Frozen Pierogies

Pierogi bake casserole is a wonderfully cozy shortcut to the flavors of traditional Eastern European dumplings without the time-intensive rolling, filling, and pinching. Classic pierogi—most closely associated with Polish cuisine, but also beloved across Ukraine, Slovakia, and other parts of Central and Eastern Europe—are typically filled with potatoes, cheese, or sauerkraut and then boiled and pan-fried in butter.

In this easy version, frozen pierogies are layered with a creamy, cheesy sauce and savory toppings for a bubbling, golden casserole that captures the spirit of pierogi night with a fraction of the effort. It’s perfect for busy weeknights, potlucks, or cozy cold-weather dinners.

This casserole is rich and satisfying, so it pairs beautifully with a crisp green salad, roasted vegetables, tangy sauerkraut, or quick-pickled cucumbers. Rye bread or a crusty baguette also makes an excellent addition for soaking up the creamy sauce.

Servings

6 servings

Ingredients

• 2 (16–20 oz) bags frozen potato-and-cheese pierogies (about 24 pierogies total)
• 4 tablespoons unsalted butter, melted (plus extra for greasing the dish)
• 1 medium yellow onion, thinly sliced
• 6 slices bacon, chopped (optional)
• 2 cloves garlic, minced
• 1 1/2 cups sour cream
• 1 cup heavy cream or half-and-half
• 1 1/2 cups shredded sharp cheddar cheese, divided
• 1/2 cup shredded mozzarella cheese (optional)
• 1 teaspoon kosher salt
• 1/2 teaspoon freshly ground black pepper
• 1/2 teaspoon smoked paprika or sweet paprika
• 1 tablespoon chopped fresh chives or green onions
• 2 tablespoons chopped fresh parsley or dill

Directions

1. Preheat the oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish with butter or nonstick spray.
2. In a large skillet over medium heat, cook the chopped bacon until crisp and browned, about 6–8 minutes. Transfer the bacon to a paper towel-lined plate, leaving 1–2 tablespoons of bacon fat in the skillet. If skipping the bacon, use butter or oil instead.

3. Add the sliced onion to the skillet and cook until soft and lightly caramelized, about 8–10 minutes. Stir in the minced garlic and cook for another 30–60 seconds until fragrant. Remove from heat.
4. In a medium mixing bowl, whisk together the sour cream, heavy cream or half-and-half, melted butter, salt, pepper, and paprika until smooth.
5. Stir in 1 cup of the shredded cheddar cheese, the mozzarella if using, and the chopped herbs.

6. Arrange one bag of frozen pierogies in a single layer in the prepared baking dish.
7. Scatter half of the onion-garlic mixture and half of the bacon over the pierogies. Spoon about half of the creamy sauce evenly over the top.
8. Repeat with the remaining pierogies, onion mixture, bacon, and creamy sauce, spreading gently so most of the pierogies are coated.

9. Sprinkle the remaining 1/2 cup shredded cheddar cheese evenly over the casserole.
10. Cover loosely with foil and bake for 20 minutes.
11. Remove the foil and continue baking for another 15–20 minutes, or until bubbling and lightly browned on top.
12. Let the casserole rest for 5–10 minutes before serving. Garnish with additional chopped herbs just before bringing it to the table.

Variations & Tips

For a vegetarian version, omit the bacon and sauté mushrooms with the onions for extra savory depth.

Different frozen pierogi fillings work beautifully in this casserole, including potato and onion, cheddar, or sauerkraut and mushroom varieties.

To lighten the dish slightly, use half-and-half or whole milk instead of heavy cream and reduce the cheese by about 1/2 cup.

Frozen peas, corn, sautéed spinach, or blanched broccoli can also be layered into the casserole for a more complete one-pan meal.

For added flavor, stir a teaspoon of Dijon mustard or a pinch of cayenne pepper into the sauce. Smoked cheese also gives the casserole a more traditional Eastern European-inspired flavor.

You can assemble the casserole up to one day ahead and refrigerate it before baking. Add 10–15 extra minutes to the covered bake time if cooking directly from cold.

Store leftovers covered in the refrigerator for up to 4 days. Reheat gently in the oven or microwave, adding a splash of milk or cream if needed to loosen the sauce.