Green Bean Casserole

This casserole was invented in 1955 by Dorcas Reilly in the Campbell's Soup Company test kitchen in Camden, New Jersey. She created it to sell cream of mushroom soup. What she actually created was an American institution. More than 40 million households serve this dish at Thanksgiving. That's not an accident. That's a recipe that works.

I'll be honest with you. I spent years dismissing green bean casserole as cafeteria food, the kind of thing made by people who didn't know better. I was wrong. When you build the sauce from scratch, when you blanch your beans properly, when you take the time to fry your own onions until they shatter at the touch, this humble casserole becomes something genuinely delicious. It deserves the same respect I'd give any French gratin.

The version I'm teaching you here honors the original architecture while improving the materials. Fresh mushrooms instead of canned soup. Beans with actual texture instead of army-green mush. Onions fried until golden and honest, not dusty from a canister. Your grandmother might not recognize it at first glance, but she'd recognize it at first bite.

For Thanksgiving, this casserole is a gift. Nearly everything can be done ahead. The sauce holds for days. The beans blanch in minutes. Only the onions demand last-minute attention, and even those can be fried the morning of and crisped in the oven. This is a dish designed for the chaos of holiday cooking.