This is a classic green bean casserole recipe for the 21st century. Whether you grew up with the canned soup version at every Thanksgiving dinner or this is your first time encountering the storied side dish, it’s guaranteed to impress. This iconic casserole recipe is steeped in post–World War II American culture: In 1955, Campbell’s test kitchen tasked supervisor Dorcas Reilly with creating an easy recipe that featured the company’s canned green beans and mushroom soup. Reilly added in a few other pantry ingredients, packed the saucy mix into a casserole dish, and topped it with...…This is a classic green bean casserole recipe for the 21st century. Whether you grew up with the canned soup version at every Thanksgiving dinner or this is your first time encountering the storied side dish, it’s guaranteed to impress. This iconic casserole recipe is steeped in post–World War II American culture: In 1955, Campbell’s test kitchen tasked supervisor Dorcas Reilly with creating an easy recipe that featured the company’s canned green beans and mushroom soup. Reilly added in a few other pantry ingredients, packed the saucy mix into a casserole dish, and topped it with...WW…