Saute until the dough is slightly browned. This will make for a slightly crisp exterior, which makes pierogi so so good! Serve with the sauteed onion and, if you like, a dollop of sour cream and ...

Keep warm until serving. Or, just before serving, transfer cooked pierogies to a frying pan and lightly pan-fry in butter until golden, about 1 minute per side. Serve pierogies with sour cream and ...