sentence: boil the potatoes in water sentence: combine the flour butter and water sentence: knead the dough until soft sentence: mash the potatoes with butter and cheese sentence: divide the dough into smaller balls sentence: roll the ball of dough out sentence: cut out circles from the sheet of dough sentence: place the filling and spinach on the dough sentence: fold the dough over and press the edges together sentence: boil the pierogies in a pot of water sentence: layer marinara sauce and pierogies