Lima Bean Casserole

This is a slow cooker casserole that earned its keep at every church potluck and Sunday supper of mid-century America. Frozen lima beans simmer slow with cream of celery soup, mushrooms, and pimentos, then get a last-minute pour of heavy cream and a generous shower of Parmesan to finish. The lima beans turn buttery-soft, the soup base reduces to a velvety gravy, and the dill weed lifts the whole pot with a clean herbal note.

Two technique points make or break this one. First, don’t rush the slow cook. Lima beans need real time to break down and absorb the cream-soup flavor, and the long, low heat is what melts canned mushrooms into the sauce instead of leaving them rubbery. Second, hold the cream and cheese until the very end. Adding cream early causes it to break and curdle, and Parmesan stirred in too soon loses its punch. Both go in just before serving for that fresh, glossy finish.

Kitchen Tips

• Use frozen baby limas, not dried. Dried beans need soaking and won’t soften reliably alongside the soup.
• Drain canned mushrooms well. The brine they sit in is salty and metallic, and you don’t want it in the sauce.
• Stir the cream in gently. Vigorous mixing breaks the limas and turns the dish into mush.
• Taste before adding all the salt called for. Cream of celery soup, canned mushrooms, and Parmesan all bring plenty of sodium.

Variations

• Brown a pound of ground beef or sliced kielbasa and stir in for a meaty version.
• Swap cream of celery for cream of mushroom or cream of chicken to shift the flavor base.
• Top with a buttered breadcrumb crust and broil for a few minutes for a casserole-style finish.