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How To Make Pierogi Lasagna With Leftover Mashed Potatoes

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This Pierogi Lasagna is a fun dish to prepare with the kids. It’s also a great way to use up leftover mashed potatoes if, like me, you always make enough to feed an army.

a collage of pierogi lasagna with title text reading Pierogi Lasagna

If you’re going for healthiest mother of the year, this isn’t the dish to land you the prize. However, it is always a hit with the kids and is quick and easy to put together. In other words, it’s perfect for those busy weeknights when you just want to get dinner on the table and enjoy the meal without complaints.

How to Make Pierogi Lasagna

Despite the fact that the ingredients for this lasagna are much different than the traditional version, the process is remarkably similar.

a slice of pierogi lasagna on a yellow plate next to a flower linen with a glass baking dish of lasagna in the background

Step 1 – Prepare the Noodles

Boil or soak the lasagna noodles (depending on what type you are using).

Step 2 – Prepare the Filling

Next, cook the bacon in a skillet. Place the bacon on a paper towel covered plate.

Then, add the onion and garlic to the bacon grease in the skillet.

chopped onion and garlic in a skillet

When the onions are translucent, combine them with sour cream, cheeses and mashed potatoes in a large bowl.

a glass bowl filled with garlic, onions, shredded cheese, sour cream, butter and mashed potatoes, and a wooden spoon

Crumble 2 of the bacon strips into the mixture and stir well.

Step 3 – Layer the Ingredients

Now you’re ready to assemble the pierogi lasagna! Start with a layer of noodles and spread an even layer of the filling over the top. Repeat these layers and top with one more layer of noodles. Sprinkle the remaining cheddar cheese over the noodles.

lasagna noodles, filling and shredded cheese in a glass dish on a white marbled counter

Cover the dish with foil and bake at 375 degrees for 30 minutes. Remove the foil, crumble the remaining piece of bacon over the top and cook for 3-5 more minutes.

lasagna topped with cheese and bacon in a glass dish on a white counter

Pierogi Lasagna Recipe

a slice of pierogi lasagna on a yellow plate next to a flower linen with a glass baking dish of lasagna in the background

Here’s a printable version of the recipe.

📋 Recipe

Pierogi Lasagna

Corinne Schmitt
A great spin on lasagna!
5 from 7 votes
Prep Time 30 minutes
Cook Time 35 minutes
Total Time 1 hour 5 minutes
Course Dinner
Cuisine American
Servings 6
Calories 323 kcal


  • 3 cups mashed potatoes
  • 1/2 cup sour cream
  • 1/2 package cream cheese 4oz
  • 1 onion
  • 2 Tablespoons minced garlic
  • 3 slices bacon
  • 1/2 package lasagna noodles
  • 1 1/2 cup cheddar cheese


  • Preheat oven to 375F
  • If using oven-ready lasagna noodles, soak them in water while you prepare the rest of the ingredients. If using regular noodles, cook them according to package directions.
  • Cook the bacon in a skillet until fully cooked and then remove to a paper-lined plate.
  • Add the chopped onion and minced garlic to the bacon fat and cook until the onions are translucent, stirring occasionally.
  • Stir the cooked onions, garlic, sour cream, 1/2 cup of cheddar cheese and cream cheese into the mashed potatoes. Crumble and add 2 slices of the cooked bacon.
  • Line or grease your casserole pan and lay down a layer of cooked noodles.
  • Spread an even layer of the potato mixture over top of the noodles – about 1 1/2 cups.
  • Add another layer of the lasagna noodles, then the remaining potato mixture, and a final layer of noodles.
  • Top with the remaining shredded cheese and cover with tinfoil.
  • Bake for 30 minutes or until the lasagna appears to be cooked through. Remove the tinfoil and crumble the remaining strip of bacon over top of the lasagna.
  • Cook for an additional 3-5 minutes to get the cheese nicely melted.


Calories: 323kcalCarbohydrates: 30gProtein: 12gFat: 18gSaturated Fat: 10gCholesterol: 47mgSodium: 296mgPotassium: 443mgFiber: 2gSugar: 3gVitamin A: 402IUVitamin C: 27mgCalcium: 242mgIron: 1mg
Tried this recipe?Let us know how it was!

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1 thought on “How To Make Pierogi Lasagna With Leftover Mashed Potatoes”

  1. I just found this blog and I’m having a lot of fun flipping through. This recipe sounds delicious. I never thought to put mashed potatoes in a lasagna but now that you mention it, it seems so logical 🙂


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