Cheesy Pierogi Casserole

By Lily | Last modified on Jan 29, 2026

Featured in: Main Dishes

This Cheesy Pierogi Casserole brings together the comforting flavors of cheddar pierogies, creamy Alfredo sauce, and crispy bacon in one hearty dish. Perfect for busy weeknights or family dinners, it layers cheesy goodness and simple ingredients to create a crowd-pleasing meal.

With minimal prep time and easy layering, this casserole offers a delicious alternative to traditional pierogi serving methods. The blend of mozzarella and cheddar cheeses melts to create a luscious, golden topping, while the scallions add a fresh bite to each spoonful.

Why You’ll Love This Recipe

Combines familiar comfort foods in a convenient baked casserole.
Requires less than 15 minutes to prep and layers frozen pierogies directly without boiling.
Delivers rich, cheesy flavors balanced by smoky bacon and vibrant scallions.

Ingredients

Frozen cheddar cheese pierogies: 2 pounds of frozen pierogies provide a flavorful and hearty base with creamy cheddar inside.
Alfredo sauce: One 15-ounce jar to add a rich and creamy texture that complements the cheese and pierogies perfectly.
Bacon: Eight crispy cooked slices, chopped for smoky, salty crunch layered throughout the casserole.
Green onions: Finely chopped scallions for a fresh, mild onion flavor and a pop of color.
Shredded mozzarella cheese: One cup to create a smooth, melty texture that pulls everyone in.
Shredded cheddar cheese: One cup enhances the casserole with sharpness and extra cheesy depth.
Kosher salt: To season and balance all the rich flavors in the casserole.
Black pepper: Freshly ground for a mild spicy note that livens up the dish.
Fresh parsley: One teaspoon chopped, for garnish adding herbal brightness and color contrast.

Instructions

Preheat and prepare casserole dish: Set your oven to 375°F and grease a 9×13 inch casserole dish. Greasing ensures the layers won’t stick and makes cleanup straightforward.
Layer the first half of pierogies: Arrange half of the frozen cheddar pierogies evenly on the bottom of the casserole dish. Using them frozen saves you time and the pierogies will cook thoroughly while baking.
Add sauce, bacon, onions, and cheese: Evenly spoon half of the Alfredo sauce over the pierogies to ensure moisture and creaminess. Sprinkle half of the crispy bacon, chopped green onions, and a mixture of mozzarella and cheddar cheeses on top to add flavor and texture to each layer.
Layer remaining pierogies and toppings: Add the second half of the pierogies on top and repeat the process with the rest of the Alfredo sauce, bacon, green onions, and shredded cheeses. This builds rich, cheesy layers that melt and blend beautifully while baking.
Season and cover for baking: Lightly season the entire casserole with kosher salt and freshly ground black pepper. Cover the dish with aluminum foil to retain moisture and bake for 15 minutes allowing the pierogies to soften and the flavors to meld.
Uncover and finish baking: Remove the foil and bake for another 20-25 minutes, until the cheese topping is golden, melted, and bubbly. This final step browns the cheese for a deliciously crisp finish and ensures the casserole is cooked through.
Garnish and serve: Sprinkle freshly chopped parsley across the top for a burst of color and freshness. Let the dish cool slightly before serving to allow the layers to set for perfect portions.

You Must Know

You do not need to pre-boil the pierogies; they will cook properly while baking in the sauce.
Greasing the casserole dish well helps prevent sticking and makes cleanup easier.
For a balanced meal, pair this hearty casserole with healthy sides like roasted broccoli or sautéed asparagus.

Storage Tips

Store leftover casserole in an airtight container in the refrigerator for up to 3 days. Reheat individual portions in the microwave or oven until warmed through and bubbly.

Serving Suggestions

Serve this casserole alongside a crisp green salad or roasted vegetables to add freshness and variety. A dollop of sour cream or a sprinkle of extra fresh scallions also complements the rich flavors perfectly.

Professional Tips

Use a high-quality Alfredo sauce or make your own for a more luxurious creaminess.
For extra crispiness, broil the casserole for 2-3 minutes at the end of baking, watching closely.
Adjust bacon quantity to taste or swap for smoked sausage for a flavor twist.

FAQs

Can I use different types of pierogies?: Yes, you can substitute with potato, sauerkraut, or meat pierogies, but cooking times may vary slightly.
Do I have to cook the bacon before adding?: Yes, the bacon should be fully cooked and crispy before adding to maintain texture and flavor.
Can I freeze this casserole?: Yes, assemble but don’t bake. Cover tightly and freeze for up to 2 months, then bake from frozen, adding extra time.
Is this casserole suitable for meal prep?: Absolutely! It’s easy to prepare in advance and reheat for quick lunches or dinners throughout the week.
What are good side dishes to serve with this?: Roasted or steamed vegetables, fresh salads, and light soups complement this rich dish wonderfully.
Can I make this casserole vegetarian?: Simply omit the bacon and consider adding sautéed mushrooms or smoked paprika for a smoky flavor alternative.
How spicy is the dish?: This casserole is mild but pepper seasoning adds subtle warmth; adjust to suit your preferences.