The green bean casserole has long been a favorite comfort food and it is an essential thanksgiving side dish. The original recipe was introduced in the mid-1950s by the campbell soup company, and the original recipe card can be found in the national inventors hall of fame in akron, ohio. This is a delicious green bean casserole, perfect for a holiday feast or sunday family dinner. The homemade cheddar cheese sauce with sour cream and mushrooms is an excellent replacement for the canned condensed soup and it is as creamy and delicious as the classic campbell's recipe. If you prefer the soup version, take a look at this classic holiday green bean casserole.