This is one of the BEST recipes for home made green bean casserole. Actually, I make the portion of 1 pound of green beans to 1 pound of mushrooms, don't bother with the panko stuff and add 1 more thinly sliced white onion. Delish!!!!
http://www.foodnetwork.com/recipes/alto ... index.html
The onion topping is my favorite and is like having onion rings on top of the casserole. You won't ever miss the mushroom soup concoction again after having this.