This is my quick GO TO dinner. It's so easy and makes everyone happy.
Boil water and drop in frozen pierogies. Cooks in 5 minutes.
While water is boiling, saute sliced onions, mushrooms and garlic in olive oil. Season with salt.
With a slotted spoon, remove cooked pierogies from water and add to pan with vegetables.
Gently stir and serve.