This no-pre-cooking casserole combines frozen pierogi, fully cooked kielbasa, onion, and a creamy sauce in one baking dish. Cover it until the pierogi soften, then uncover it to melt the cheddar and let excess moisture evaporate.
Essential Concepts
Use fully cooked kielbasa; do not boil the pierogi first. Related posts: [Easy sausage dinners](/easy-sausage-dinners/) and [Pierogi recipes](/pierogi-recipes/).