adds sweetness as they cook.
Arrange the frozen pierogies on top of the onions in an even layer. It’s fine if they overlap a bit, but avoid packing them in too tightly so they can cook evenly and stay tender.
Scatter the sliced smoked sausage rounds over the pierogies, distributing them as evenly as possible so every scoop later gets a good mix of sausage, dumplings, and onions.
Pour the melted butter slowly and evenly
