Cabbage dumplings-vareniki is a dough stuffed with mashed potato and chopped onions. These dumplings are a hand made product. There are many ways to cook cabbage dumplings-vareniki. They can be fried, stewed, baked in casseroles, or simply boiled and served with soup. Cabbage dumplings can be eaten with any type of sauces mayonnaise, ketchup, and sour cream.