Here's something you don't see every day. These little dumplings, sort of eastern European ravioli, are not something I would make from scratch. As it happens, however, we ate at a wonderful Chinese restaurant (wontons are very pierogi-like), down the strip mall from which is a Ukrainian market. That's where we got the pierogis - a 3-lb. bag (frozen) for $3.99/lb. Generally speaking, about 12 oz. will serve the two of us, so there are at least 3 meals there.
No need for me to post a recipe. All you do is bring a big pot of water to a boil, salt it the way you would for pasta, and put the pierogis in until they float to the top - about 6 minutes. They can be eaten with various condiments, from carmelized onions, to butter, or, in our case a lovely dipping sauce Peter came up with. It included yogurt, lemon juice, salt and pepper, garlic and fresh basil. It was a comforting and satisfying meal.