I haven't made them in years. My BFF and I would get together and spend the afternoon making them and then the husbands would show up for dinner and they'd be gone in no time. Did that for about 20 years. Then one day we found out the local grocery store started carrying them in the frozen food section. We haven't gotten together to make them since.
But here is her Polish Grandmother's recipe:
Dough:
2 C flour
1 egg
3/4 C cold water, appox.
Cut egg into flour. add enough water to make workable, rollable dough. Cut into circles. Fill with cheese-y mashed potatoes, no milk or butter added. Fold in half and seal edges. Place in boiling salted water. When they float to the top, boil for 5 min. Drain and rinse. Place in large baking dish and cover with 1 1/2 C butter and 1 1/2 cups sauteed onions.
Bake 30 min. at 300* F
According to my notes at the bottom of the envelope with the recipe, we would make 3 batches of dough and get 8 servings. But then we probably ate more than one serving a piece.