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

and sausage in the slow cooker

Uncooked pierogies and sausage in the slow cooker

Pour the melted butter slowly and evenly over the sausage and pierogies, making sure to hit as much of the surface as you can. This butter will form the simple, rich sauce as everything cooks together.

Cover the slow cooker with the lid and cook on LOW for 3 to 4 hours, until the pierogies are tender, the onions are soft, and the sausage is heated through. Avoid lifting the lid during the first 2 hours