This baked Chicken Pierogi Casserole is made with a delicious creamy mushroom sauce, offering a comforting and satisfying meal perfect for any weeknight. The combination of cheesy, pillowy pierogis and rich, savory sauce creates an irresistible dish that’s easy to prepare and guaranteed to please.
Table of Contents

Expert tips
You can prepare the casserole ahead of time. Just put all the ingredients together without baking it, cover the dish, and keep it in the fridge for up to 24 hours. If you decide to bake it straight from the fridge, you’ll need to add about five extra minutes to the baking time.
Recipe snapshot
Ingredients: flour, chicken broth, cream of chicken soup, garlic powder, onion powder, Italian seasoning, black pepper, cheese, boneless chicken, mushrooms, and pierogi.
Cuisine type: American Italian
Total time to make: 50 minutes
FAQ’s
No, you do not need to pre-boil the pierogi in this recipe.
Yes, the pierogi are left frozen in this casserole.
Process Shots for Mushroom Pierogi




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Baked Pierogi Recipe
Ingredients
- Butter (for greasing the dish)
- ⅛ cup all-purpose flour
- ¼ cup chicken broth
- 10.5 ounce can cream of chicken soup (or cream of mushroom soup)
- ½ teaspoon garlic powder
- ½ teaspoon onion powder
- ½ teaspoon Italian seasoning
- ⅛ teaspoon black pepper
- ¼ cup shredded Italian cheese blend
- ½ pound boneless chicken, diced
- 4 ounces fresh sliced mushrooms
- 6 frozen cheese pierogies
- 1 teaspoon chopped fresh parsley (optional)
Instructions
- Preheat the oven to 400°F.
- Lightly butter an 8×8 inch baking dish and arrange the 6 frozen cheese pierogi in an even layer.
- In a bowl, whisk the chicken broth, cream of chicken soup, garlic powder, onion powder, Italian seasoning, and black pepper.
- Stir in the cheese, diced chicken, and sliced mushrooms.
- Add the chicken and cheese sauce evenly over the pierogi.
- Cover with aluminum foil sealed tightly around all of the edges and bake 35 – 40 minutes.
- Remove the foil and bake for 10 more minutes.
- Remove from the oven. Sprinkle with chopped fresh parsley, if desired.
Notes
- You can make this ahead. Assemble the casserole without baking it, cover, and refrigerate for up to 24 hours. Add 5 minutes to the bake time if chilled.
- Storage: Keep leftovers in a sealed container in the refrigerator for a maximum of 4-5 days.
- Reheating: Heat in a 350°F oven for 15 to 20 minutes or warm individual servings in the microwave.
- Freezing: Place the cooked casserole in a sealed container to freeze for up to 2 months. Defrost in the refrigerator overnight and heat until thoroughly warm.
Nutrition

Hi there, and a warm welcome! I’m Zona House, and my heart truly lies in the world of recipes.
I believe in simple, satisfying meals, so let’s make cooking enjoyable and delicious together! Eat, drink, and savor every moment!






Zona House
Monday 23rd of February 2026
This Pierogi Bake is super easy to make and delicious as well.