My neighbor Karen brought this over and we scraped the bowl clean. Comfort food at its finest. Just 4 ingredients.

Serving of sausage and pierogies with mustard on the side

Serving of sausage and pierogies with mustard on the side

If you want a touch of freshness at the end, sprinkle chopped fresh parsley or chives over the finished dish—this doesn’t count toward the core 4 ingredients, but it does brighten the plate. You can also swap yellow onion for sweet onion if you like a more caramelized, candy-like flavor. Leftovers reheat best in a covered skillet over low heat with a splash of water or broth to keep the